IP Library › Granted Patent US 4,995,441
Granted Patent Utility
US 4,995,441 · App. 07/345,562

Sectional doors and flexible hinge assemblies

Inventors: Alan R. Leist, Thomas G. Mushaben, Thomas E. Youtsey
Patented Case View Patent ↗
Granted: Feb 26, 1991 Filed: May 1, 1989
Inventors
Alan R. Leist
Thomas G. Mushaben
Thomas E. Youtsey

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 4,995,441
App. No.
07/345,562
Filed
1989-05-01
Granted
1991-02-26
Kind
A