Granted Patent
Utility
US 4,209,924 · App. 05/927,990
Marking tag
Inventor:
D. Fearing
Patented Case
View Patent ↗
Granted: Jul 1, 1980
Filed: Jul 26, 1978
Inventor
D. Fearing
Assignee (at issue)
Fearing Manufacturing Co., 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.