Granted Patent
Utility
US 5,159,997 · App. 07/606,443
Miniature shock absorber
Inventors:
Robert J. Heideman, Richard T. Mitera
Patented Case
View Patent ↗
Granted: Nov 3, 1992
Filed: Oct 31, 1990
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.