Granted Patent
Utility
US 4,317,064 · App. 06/084,708
Shadow mask suspension system
Inventor:
Lawrence W. Dougherty
Patented Case
View Patent ↗
Granted: Feb 23, 1982
Filed: Oct 15, 1979
Inventor
Lawrence W. Dougherty
Assignee (at issue)
Zenith Radio 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.