Granted Patent
Utility
US 4,248,256 · App. 06/072,012
Platform crutch attachment for an invalid walker
Inventor:
Morton I. Thomas
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Sep 4, 1979
Inventor
Morton I. Thomas
Assignee (at issue)
Temco Products Corporation
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.