IP Library › Granted Patent US 4,407,786
Granted Patent Utility
US 4,407,786 · App. 06/252,662

Glass composition

Inventors: Cyril F. Drake, Mary Tripp
Patented Case View Patent ↗
Granted: Oct 4, 1983 Filed: Apr 9, 1981
Inventors
Cyril F. Drake
Mary Tripp
Assignee (at issue)
International Standard Electric Corporation

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 4,407,786
App. No.
06/252,662
Filed
1981-04-09
Granted
1983-10-04
Kind
A