IP Library Granted Patent US 4,933,227
Granted Patent Utility
US 4,933,227 · App. 07/292,057

Aircraft windshield

Inventor: Sherman D. Stewart
Patented Case View Patent ↗
Granted: Jun 12, 1990 Filed: Dec 30, 1988
Inventor
Sherman D. Stewart
Assignee (at issue)
PPG Industries, 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 4,933,227
App. No.
07/292,057
Filed
1988-12-30
Granted
1990-06-12
Kind
A