Granted Patent
Utility
US 4,768,270 · App. 06/942,489
Installation tool for helical coil inserts
Inventor:
Leonard J. Czarnowski
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Dec 16, 1986
Inventor
Leonard J. Czarnowski
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.