Granted Patent
Utility
US 4,274,746 · App. 06/118,260
Method and apparatus for optically measuring crimp frequency
Inventors:
Max L. Cardell, John R. Holt
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Feb 4, 1980
Inventors
Max L. Cardell
John R. Holt
Assignee (at issue)
Fiber Industries, 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.