Granted Patent
Utility
US 4,181,293 · App. 05/835,485
Handrail support hardware
Inventor:
Ralph S. Laribee
Patented Case
View Patent ↗
Granted: Jan 1, 1980
Filed: Sep 22, 1977
Inventor
Ralph S. Laribee
Assignee (at issue)
Leigh Products, 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.