Granted Patent
Utility
US 4,570,739 · App. 06/537,297
Personal mobility vehicle
Inventor:
DuWayne E. Kramer, Jr.
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Sep 29, 1983
Inventor
DuWayne E. Kramer, Jr.
Assignee (at issue)
Burke, 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.