Granted Patent
Utility
US 4,756,686 · App. 07/003,729
Torch handle with locking valve
Inventors:
Peter P. Spolsino, Clifford D. Raines, Joseph P. DiSanto, Claudio P. Negro
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Jan 16, 1987
Inventors
Peter P. Spolsino
Clifford D. Raines
Joseph P. DiSanto
Claudio P. Negro
Assignee (at issue)
Wingaersheek Div. of Victor Equipment Company
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.