IP Library Granted Patent US 4,488,772
Granted Patent Utility
US 4,488,772 · App. 06/414,199

Electro-optic indicating device

Inventors: Thomas Georgopulos, Thomas A. Cioper
Patented Case View Patent ↗
Granted: Dec 18, 1984 Filed: Sep 2, 1982
Inventors
Thomas Georgopulos
Thomas A. Cioper
Assignee (at issue)
GTE Automatic Electric Incorporated

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 4,488,772
App. No.
06/414,199
Filed
1982-09-02
Granted
1984-12-18
Kind
A