It's a drinking glass. I have a set; given to me by my longtime supervisor at Kodak when he retired. Along with several photo science textbooks, those from his 1960s student days at RIT.
I don't know when these glasses were made (Kodak made and sold a great deal of promotional swag over the years, and many people collect it) but most likely these glasses date from after the company changed their graphic designs in the mid-1970s.
For the record, my preferred glass to hold a gin and tonic. (Plymouth gin, 'Q' tonic water, ice, lemon twist, dash of bitters).