Granted Patent
Utility
US 4,501,948 · App. 06/408,076
Method and apparatus for forming spiral tubing
Inventors:
Jack S. Yampolsky, Endre F. Peszeszer
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Aug 16, 1982
Inventors
Jack S. Yampolsky
Endre F. Peszeszer
Assignee (at issue)
GA Technologies, Inc.
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.