Granted Patent
Utility
US 4,910,367 · App. 07/164,527
Visible break switch
Inventors:
Donald J. Akers, Douglas Jock Walker
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Mar 7, 1988
Inventors
Donald J. Akers
Douglas Jock Walker
Assignee (at issue)
Joslyn 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.