Granted Patent
Utility
US 4,840,596 · App. 07/139,997
Factory fixture frame with means for temporarily and removably supporting an in-process tension mask for a color cathode ray tube
Inventors:
Lawrence W. Dougherty, James L. Kraner
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Dec 31, 1987
Inventors
Lawrence W. Dougherty
James L. Kraner
Assignee (at issue)
Zenith Electronics LLC
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.