Granted Patent
Utility
US 5,697,239 · App. 08/684,752
Pin tumbler cylinder lock with shearable assembly pins and method and apparatus of manufacture
Inventors:
Robert Harold Hanneman, James George Wagner, Steven A. Fantl
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Jul 19, 1996
Inventors
Robert Harold Hanneman
James George Wagner
Steven A. Fantl
Assignee (at issue)
Master Lock Company LLC
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.