IP Library › Granted Patent US 4,921,512
Granted Patent Utility
US 4,921,512 · App. 07/331,686

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Inventors: Richard D. Maryyanek, June E. Brissette
Patented Case View Patent ↗
Granted: May 1, 1990 Filed: Mar 30, 1989
Inventors
Richard D. Maryyanek
June E. Brissette
Assignee (at issue)
American Optical Corporation

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Quick Facts
Patent No.
US 4,921,512
App. No.
07/331,686
Filed
1989-03-30
Granted
1990-05-01
Kind
A