Granted Patent
Utility
US 5,961,855 · App. 09/014,491
Low voltage electrical based parts-in-place (PIP) system for contact start torch
Inventors:
Roger W. Hewett, Murray Michaels
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Jan 28, 1998
Inventors
Roger W. Hewett
Murray Michaels
Assignee (at issue)
Thermal Dynamics 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.