Granted Patent
Utility
US 4,812,602 · App. 07/181,378
Spring-loaded centrifugal switch element
Inventors:
Rico Plangger, Kamil Prochazka
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Apr 14, 1988
Inventors
Rico Plangger
Kamil Prochazka
Assignee (at issue)
BBC Brown, Boveri & Company Ltd.
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.