Granted Patent
Utility
US 4,357,815 · App. 06/173,452
Locks for vehicular antitheft lock system
Inventors:
Frank Kleefeldt, Horst Brackmann
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Jul 30, 1980
Inventors
Frank Kleefeldt
Horst Brackmann
Assignee (at issue)
Kiekert GmbH & Co. Kommanditgesellschaft
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.