Granted Patent
Utility
US 5,299,474 · App. 08/035,745
Tamper resistant device for the application of preselected torque to screws and the like
Inventors:
Ralf Hohmann, Ralf Spors, Gerhard Winterstein, Heinz Sauer
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Mar 23, 1993
Inventors
Ralf Hohmann
Ralf Spors
Gerhard Winterstein
Heinz Sauer
Assignee (at issue)
Rasmussen GmbH
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.