Granted Patent
Utility
US 4,199,032 · App. 05/878,643
Apparatus for measuring and controlling a force
Inventors:
Peter D. Weiner, Charles W. Calhoun
Patented Case
View Patent ↗
Granted: Apr 22, 1980
Filed: Feb 17, 1978
Inventors
Peter D. Weiner
Charles W. Calhoun
Assignee (at issue)
Weatherford/Lamb, 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.