Granted Patent
Utility
US 4,583,620 · App. 06/051,326
Vehicle hoist
Inventor:
Burton DeWolfe Bishop
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Jun 22, 1979
Inventor
Burton DeWolfe Bishop
Assignee (at issue)
Dresser Industries, 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.