IP Library › Granted Patent US 4,009,959
Granted Patent Utility
US 4,009,959 · App. 05/590,472

Exposure control unit

Inventors: Charles J. Watson, Larry L. Langrehr, John H. Steiner
Patented Case View Patent ↗
Granted: Mar 1, 1977 Filed: Jun 26, 1975
Inventors
Charles J. Watson
Larry L. Langrehr
John H. Steiner
Assignee (at issue)
Bell and Howell, LLC

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Quick Facts
Patent No.
US 4,009,959
App. No.
05/590,472
Filed
1975-06-26
Granted
1977-03-01
Kind
A