1960s era window crank mechanism

A handy person from Ft. Pierce, Fl says:
November 18, 2014
Only thing we could find is "patent pending" and "A/2"
Need several of these.
User submitted photos of a window operator.
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Paul from SWISCO responded:
November 19, 2014
Good morning! Check out our 39-076 and let me know if this is a possible match.
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