Granted Patent
Utility
US 4,678,448 · App. 06/855,601
Kinescope funnel thumper and flush device
Inventors:
David E. Booth, Steven George Smith, John L. Adams
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Apr 25, 1986
Inventors
David E. Booth
Steven George Smith
John L. Adams
Assignee (at issue)
RCA Corporation
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.