Granted Patent
Utility
US 4,385,535 · App. 06/211,143
Welded seal removal
Inventor:
Joseph A. Tedder
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Nov 28, 1980
Inventor
Joseph A. Tedder
Assignee (at issue)
Combustion Engineering, 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.