Granted Patent
Utility
US 4,504,047 · App. 06/378,316
Scissor support for welding tank sections
Inventor:
Steven L. Jantzen
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: May 14, 1982
Inventor
Steven L. Jantzen
Assignee (at issue)
ACF Industries Incorporated
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.