Granted Patent
Utility
US 4,337,411 · App. 06/138,899
Application of insulation to ride frame of vacuum fluorescent display
Inventor:
Robert A. Drummond
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Apr 10, 1980
Inventor
Robert A. Drummond
Assignee (at issue)
MCGRAW-EDISON 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.