Granted Patent
Utility
US 4,249,692 · App. 05/916,201
Horn for can body soldering
Inventor:
Frederick S. Sillars
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Jun 16, 1978
Inventor
Frederick S. Sillars
Assignee (at issue)
USM Holding AG
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.