Granted Patent
Utility
US 4,248,384 · App. 06/059,050
Cutting torch having integral head mixer
Inventor:
Roger D. Zwicker
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Jul 19, 1979
Inventor
Roger D. Zwicker
Assignee (at issue)
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.