Granted Patent
Utility
US 4,636,714 · App. 06/572,204
Capacitive transducer and method
Inventor:
Henry V. Allen
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Jan 18, 1984
Inventor
Henry V. Allen
Assignee (at issue)
Wystron, 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.