Granted Patent
Utility
US 6,032,297 · App. 08/886,786
Head-protective helmet and assemblies thereof
Inventors:
Michael J. Barthold, Louis Orotelli
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Jul 1, 1997
Inventors
Michael J. Barthold
Louis Orotelli
Assignee (at issue)
Cairns & Brother 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.