Granted Patent
Utility
US 4,423,573 · App. 05/958,784
Wall panel with removable acoustical insert
Inventors:
Bruce D. Omholt, Robert L. Knapp
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Nov 8, 1978
Inventors
Bruce D. Omholt
Robert L. Knapp
Assignee (at issue)
American Seating 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.