Granted Patent
Utility
US 4,064,744 · App. 05/692,977
Strain sensorextensiometer
Inventor:
Walter P. Kistler
Patented Case
View Patent ↗
Granted: Dec 27, 1977
Filed: Jun 4, 1976
Inventor
Walter P. Kistler
Assignee (at issue)
Kistler-Morse Corporation
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.