Granted Patent
Utility
US 5,409,273 · App. 08/019,699
Locking-aid device for a lock
Inventors:
Klaus Claar, Martin Lindmayer, Jan Christopher Schilling, Andreas Schmidt
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Feb 19, 1993
Inventors
Klaus Claar
Martin Lindmayer
Jan Christopher Schilling
Andreas Schmidt
Assignee (at issue)
MERCEDES-BENZ GROUP AG
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.