Granted Patent
Utility
US 5,070,540 · App. 07/070,613
Protective garment
Inventors:
William H. Bettcher, Laurence A. Bettcher
Patented Case
View Patent ↗
Granted: Dec 10, 1991
Filed: Jul 9, 1987
Inventors
William H. Bettcher
Laurence A. Bettcher
Assignee (at issue)
Bettcher 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.