Granted Patent
Utility
US 5,113,534 · App. 07/656,843
Firefighter's helmet having tilt adjustment
Inventors:
Abbott A. Lane, John M. Hetzel, Jr.
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Feb 19, 1991
Inventors
Abbott A. Lane
John M. Hetzel, Jr.
Assignee (at issue)
Firequip Helmets, 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.