Yngve Ekstrom Lamino Chair  

That one
Is not even close.

Laminett
Just found the Swedese mark under the pillow. So it is real, just as Ronald from www.dagrotterdam.nl has assured me. The armrests are patented, I learned.

Wow, interesting
Besides the arms, it looks nothing like the original Laminett. The recline angle is totally different, the back is not as high, and the top of the back does not taper. And obviously, the upholstery is different. Actually, the arms aren't really the same either. Perhaps it is a later derivation of Ekstrom's design?

This is the same basic form?...
This is the same basic form? Possibly a later Swedese chair, perhaps a discontinued model. It is not among their current offerings, and the Laminett they do offer looks the same as the original.
http://www.designaddict.com/design_radar/index.cfm/fuseaction/design_rad...

Yes, this looks more like it.
I think it's related to the Primo. Has the same seat and back.

After three years, I finally...
After three years, I finally happened across a "Lamino" chair identical to mine, being sold by someone at the Ebay auction linked below. It has the same hardware, the same extra rung in the back, and the same unusual joinery of the armrests that is different from all Lamino chairs with the Swedese stamp. But, it too appears to have no label or markings.
I think it was speculated that my chair might be a project piece done by an amateur furniture maker, but it appears that someone was producing a number of them.
Looks like the images from my original post have been lost, so I added a couple at the top.
http://www.ebay.com/itm/190738725801

I just noticed a completed...
I just noticed a completed Ebay auction for a low-back version with the same details as mine, again with no label or markings. Swedese had told me some years back that they had no knowledge of having produced the chairs like the one I have, and did not believe they produced it. They acknowledged that there are Kurva chairs with DUX labels, but did not know how they came into being.
http://www.ebay.com/itm/Vintage-Yngve-Ekstrom-Teak-Lamino-Easy-Chair-Mid...

Is that your chair,...
Is that your chair, currently on eBay for sale? It is very nice despite questioned designer?

The chair on Ebay is exactly...
The chair on Ebay is exactly the same in all respects that I can see, but is not mine. My chair is very well made, and even Swedese told me it appeared to be very well crafted even though they said they did not make it. I suppose that just makes it seem more enigmatic to me, and curious about who was going through the trouble to make a copy of this nature.

I think it's quite possible...
I think it's quite possible that Swedese simply doesn't know their own history very well.
I'm not at all an expert on Swedese or Dux, but just from browsing 1000's of books and magazines over the years, I have a vague memory of that Dux manufactured or at least distributed some designs by other Scandinavian companies for the the US market.
The same with another Swedish company, Bonnier, who had a store in NY and sold furniture and decorative items by Swedish designers, under the Bonnier name in the US. The only design that comes to mind right now, is the String shelving system, but I know there is many more...

Your Lamino chair is made by...
Your chair certainly looks like a Lamino made by Swedese. This was Ekströms own company. The newer chairs have a branded mark on one of the wooden cross pieces.
Ekström made a precusor called Kurva (Curve in English). It is almost identical but the arm rest is screwed on rather than integral like yours. It was only made for a short while so good chairs are dear. They demand a higher price than the Lamino even though they are not quite as well made.
Here are pics of the Kurva.

Another near-Lamino popped up on EBay, a rocking chair version, again with the second support slat and divergent transition from armrest to leg. Would be interesting to know who made these . . .
Can anyone comment on the comfort of the authentic Lamino? How is the height of the headrest? Many 50s lounges didn't manage the transition to larger heights very well in that respect.

I find the comfort of the original Lamino to be excellent. They feel a bit like a sling chair, insofar as you are supported by the upholstery material, and do not contact any of the parts of the chair frame. I started this original thread regarding the copy I owned, and in its case, you did feel the frontal seat rung when you sat in the chair. It kind of hit you behind the knees, and was not comfortable. Perhaps this was because the upholstery material was not taut enough, or maybe it was because the design was not as well executed. The genuine Lamino's are more comfortable than this copy version was.

Interesting that the copy was less comfortable than the original, when they look so similar in frame.
Good to hear about the comfort. It's one of my favorite chairs. I need to find one near me to try out.