IP Library › Granted Patent US 3,949,219
Granted Patent Utility
US 3,949,219 · App. 05/542,208

Optical micro-switch

Inventor: Ronald J. Crouse
Patented Case View Patent ↗
Granted: Apr 6, 1976 Filed: Jan 20, 1975
Inventor
Ronald J. Crouse
Assignee (at issue)
Optron, Inc.

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 3,949,219
App. No.
05/542,208
Filed
1975-01-20
Granted
1976-04-06
Kind
A