Granted Patent
Utility
US 4,523,451 · App. 06/552,882
Hydraulic proximity probe
Inventor:
Clark S. Boster
Patented Case
View Patent ↗
Granted: Jun 18, 1985
Filed: Nov 17, 1983
Inventor
Clark S. Boster
Assignee (at issue)
BorgWarner 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.