IP Library › Granted Patent US 4,341,436
Granted Patent Utility
US 4,341,436 · App. 06/181,977

Lens cap

Inventors: Hideo Kanno, Yoshiki Suzuki
Patented Case View Patent ↗
Granted: Jul 27, 1982 Filed: Aug 28, 1980
Inventors
Hideo Kanno
Yoshiki Suzuki
Assignee (at issue)
Nippon Kogaku K.K.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,341,436
App. No.
06/181,977
Filed
1980-08-28
Granted
1982-07-27
Kind
A