Granted Patent
Utility
US 4,799,699 · App. 07/047,202
Dolly frame
Inventors:
Robert C. Berfield, Craig A. Seasholtz
Patented Case
View Patent ↗
Granted: Jan 24, 1989
Filed: May 6, 1987
Inventors
Robert C. Berfield
Craig A. Seasholtz
Assignee (at issue)
SHOP VAC 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.