Granted Patent
Utility
US 4,484,364 · App. 06/456,354
Shock attenuation system for headgear
Inventors:
Hal D. Mitchell, David C. Rust
Patented Case
View Patent ↗
Granted: Nov 27, 1984
Filed: Jan 7, 1983
Inventors
Hal D. Mitchell
David C. Rust
Assignee (at issue)
ATO BV
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.