Granted Patent
Utility
US 4,975,643 · App. 07/333,538
Measurement and control of magnetostrictive transducer motion using strain sensors
Inventor:
Warren G. Buchwald
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Apr 5, 1989
Inventor
Warren G. Buchwald
Assignee (at issue)
Fisher Controls International LLC
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.