Granted Patent
Utility
US 3,930,622 · App. 05/478,841
Energy storing safety belt retractor
Inventors:
Akira Tanaka, Avraham Ziv
Patented Case
View Patent ↗
Granted: Jan 6, 1976
Filed: Jun 13, 1974
Inventors
Akira Tanaka
Avraham Ziv
Assignee (at issue)
American Safety Equipment Corporation
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.