IP Library › Granted Patent US 4,975,762
Granted Patent Utility
US 4,975,762 · App. 06/272,732

Alpha-particle-emitting ceramic composite cover

Inventors: Norman H. Stradley, James A. Woolley
Patented Case View Patent ↗
Granted: Dec 4, 1990 Filed: Jun 11, 1981
Inventors
Norman H. Stradley
James A. Woolley
Assignee (at issue)
General Electric Ceramics, 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 4,975,762
App. No.
06/272,732
Filed
1981-06-11
Granted
1990-12-04
Kind
A