Granted Patent
Utility
US 4,453,271 · App. 06/427,430
Protective garment
Inventor:
Byron A. Donzis
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Sep 29, 1982
Inventor
Byron A. Donzis
Assignee (at issue)
American Pneumatics Co.
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.