Ken Burns , Sep 18, 2003; 08:56 p.m.
Kenro makes (or made, are they still in business?) commercial camera equipment for shooting line negs, seperation negs, copy negs, etc. These cameras were used a lot by the printing and electronics industries as well as others, but have probably been replaced by the digital imaging technology of today. They are usually vertical cameras resembling very large enlarger equipment or horizontal cameras that take up a whole room. More than likely, the lenses you have were used for one of the purposes mentioned above, but, since there is no mention of their being apochromatic, I doubt they were used for color seps. Probably just copy camera work.
For years I worked in a photo studio that owned a Kenro 2500 that was used for shooting line negs for exposing type onto photos. It was a vertical camera with a vacuum plate to hold the litho film flat. Enlargement and focussing settings were cranked in according to a chart and exposure compensations for bellows extensions was automatically made according to the settings that were cranked in. The lenses on that camera were wide angle copy lenses, but were not apochromatic.