IP Library › Granted Patent US 4,831,244
Granted Patent Utility
US 4,831,244 · App. 07/103,745

Optical record cards

Inventors: Warren D. Slafer, Milford B. Kime
Patented Case View Patent ↗
Granted: May 16, 1989 Filed: Oct 1, 1987
Inventors
Warren D. Slafer
Milford B. Kime
Assignee (at issue)
Polaroid Corporation

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Quick Facts
Patent No.
US 4,831,244
App. No.
07/103,745
Filed
1987-10-01
Granted
1989-05-16
Kind
A