Granted Patent
Utility
US 4,243,978 · App. 06/082,067
Display or indicating device with magnetic stop
Inventor:
Donald Winrow
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Oct 5, 1979
Inventor
Donald Winrow
Assignee (at issue)
Ferranti-Packard Limited
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.