Granted Patent
Utility
US 4,570,313 · App. 06/687,850
Spindle lock-up device
Inventors:
Paul E. Holmstrom, Joseph F. Ogrinc
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Dec 31, 1984
Inventors
Paul E. Holmstrom
Joseph F. Ogrinc
Assignee (at issue)
G. A. Gray Division, The Warner & Swasey 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.