Granted Patent
Utility
US 3,952,747 · App. 05/455,582
Filter and filter insertion instrument
Inventor:
Garman Oscar Kimmell
Patented Case
View Patent ↗
Granted: Apr 27, 1976
Filed: Mar 28, 1974
Inventor
Garman Oscar Kimmell
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.