IP Library › Granted Patent US 4,747,680
Granted Patent Utility
US 4,747,680 · App. 06/740,529

Spectacle frame

Inventors: Tatsuro Hatano, Kazuyuki Sakamoto
Patented Case View Patent ↗
Granted: May 31, 1988 Filed: Jun 3, 1985
Inventors
Tatsuro Hatano
Kazuyuki Sakamoto
Assignee (at issue)
Nippon Kogaku K.K.

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Quick Facts
Patent No.
US 4,747,680
App. No.
06/740,529
Filed
1985-06-03
Granted
1988-05-31
Kind
A