Granted Patent
Utility
US 5,285,716 · App. 07/949,186
Spring brake assembly having tamper-resistant welded housing and method for making same
Inventor:
Laurence Thompson
Patented Case
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Granted: Feb 15, 1994
Filed: Sep 22, 1992
Inventor
Laurence Thompson
Assignee (at issue)
TSE Brakes, Inc.
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.