Granted Patent
Utility
US 5,206,973 · App. 07/851,421
Sound-deadener for window torsion balance
Inventor:
Edward L. Belcher
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Mar 16, 1992
Inventor
Edward L. Belcher
Assignee (at issue)
CALDWELL MANUFACTURING COMPANY
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.