Granted Patent
Utility
US 4,151,900 · App. 05/856,118
Brake assembly for a rotatable shaft
Inventor:
Gary R. Kirwan
Patented Case
View Patent ↗
Granted: May 1, 1979
Filed: Nov 30, 1977
Inventor
Gary R. Kirwan
Assignee (at issue)
Union Carbide 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.