Granted Patent
Utility
US 4,694,939 · App. 06/730,334
Shock absorber with stop collar
Inventors:
Robert J. Heideman, Richard T. Mitera
Patented Case
View Patent ↗
Granted: Sep 22, 1987
Filed: May 3, 1985
Inventors
Robert J. Heideman
Richard T. Mitera
Assignee (at issue)
Enertrols, 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.