Granted Patent
Utility
US 4,353,075 · App. 06/252,599
Telescoping vehicle radio antenna with compressible O-ring seal
Inventor:
Ralph W. Edwards
Patented Case
View Patent ↗
Granted: Oct 5, 1982
Filed: Apr 9, 1981
Inventor
Ralph W. Edwards
Assignee (at issue)
General Motors LLC
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.