IP Library › Granted Patent US 4,565,729
Granted Patent Utility
US 4,565,729 · App. 06/502,867

Polyurethane laminate of contrasting layers and process therefor

Inventors: Paul E. Liggett, David L. Braun
Patented Case View Patent ↗
Granted: Jan 21, 1986 Filed: Jun 9, 1983
Inventors
Paul E. Liggett
David L. Braun
Assignee (at issue)
Goodyear Aerospace 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 4,565,729
App. No.
06/502,867
Filed
1983-06-09
Granted
1986-01-21
Kind
A