Granted Patent
Utility
US 4,398,185 · App. 06/223,439
Simple and rugged fishing alarm
Inventor:
Joseph Roberts
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Jan 8, 1981
Inventor
Joseph Roberts
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.