IP Library › Granted Patent US 4,672,194
Granted Patent Utility
US 4,672,194 · App. 06/808,120

Passive proximity battery control circuit for night vision goggles

Inventors: William A. Kastendieck, Thomas E. Broyles
Patented Case View Patent ↗
Granted: Jun 9, 1987 Filed: Dec 12, 1985
Inventors
William A. Kastendieck
Thomas E. Broyles
Assignee (at issue)
Varo 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 4,672,194
App. No.
06/808,120
Filed
1985-12-12
Granted
1987-06-09
Kind
A