Granted Patent
Utility
US 4,401,959 · App. 06/170,362
Magnetically actuated indicator
Inventors:
John A. Enright, Milton N. Ives, Richard H. Daniels
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Jul 21, 1980
Inventors
John A. Enright
Milton N. Ives
Richard H. Daniels
Assignee (at issue)
North American Philips 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.