Granted Patent
Utility
US 4,335,908 · App. 06/150,761
Push-in tube connector
Inventor:
Donald G. Burge
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: May 19, 1980
Inventor
Donald G. Burge
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.