Granted Patent
Utility
US 4,590,967 · App. 06/767,041
Gladhand with built-in dirt protection plug
Inventors:
Eugene W. Schmitt, Michael R. Stoltenberg
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Aug 19, 1985
Inventors
Eugene W. Schmitt
Michael R. Stoltenberg
Assignee (at issue)
Sloan Valve Company
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.