Granted Patent
Utility
US 4,349,082 · App. 06/219,394
Acoustical damping element and method of forming same
Inventor:
William J. Gastmeier
Patented Case
View Patent ↗
Granted: Sep 14, 1982
Filed: Dec 22, 1980
Inventor
William J. Gastmeier
Assignee (at issue)
Unitron Industries Ltd.
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.