Granted Patent
Utility
US 3,954,694 · App. 05/546,686
Wearing composition
Inventors:
James R. Hallstrom, Raymond J. Hoffman, Ronald L. Walling
Patented Case
View Patent ↗
Granted: May 4, 1976
Filed: Feb 3, 1975
Inventors
James R. Hallstrom
Raymond J. Hoffman
Ronald L. Walling
Assignee (at issue)
REXNORD GMBH
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.