Granted Patent
Utility
US 4,770,643 · App. 06/895,051
In-floor fitting
Inventors:
Norman Castellani, Robert C. Holland
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Aug 11, 1986
Inventors
Norman Castellani
Robert C. Holland
Assignees (at issue)
Norman Castellani
Robert A. Holland
Raceway Components, Inc.
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.