Granted Patent
Utility
US 4,555,255 · App. 06/726,914
Corner connector clip in an air filter grid
Inventor:
Gary T. Kissel
Patented Case
View Patent ↗
Granted: Nov 26, 1985
Filed: Apr 23, 1985
Inventor
Gary T. Kissel
Assignee (at issue)
Allis-Chalmers Corporation
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.