Granted Patent
Utility
US 5,878,488 · App. 08/707,676
Washerless bolt head seal for compressor housing
Inventor:
Hugh James Muirhead
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Sep 4, 1996
Inventor
Hugh James Muirhead
Assignee (at issue)
General Motors 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.