When did Ilex and Wollensak stop making lenses?

[PHOTOTONE]

I was wondering when Ilex and Wollensak stopped making lenses for press and view camera applications?

When did Ilex stop making shutters suitable for view camera lenses?

 

[Wayne]

I dont know but I want to guess. I'll guess 1964, +/- 5 years for Wollensak, based on nothing more than gut feeling.

 

[Wayne]

Dohh! I was close, 1972, assuming they made them to the end that is.

http://historiccamera.com/cgi-bin/librarium/pm.cgi?action=display&login=wollensak