Granted Patent
Utility
US 4,331,947 · App. 06/140,423
Electric safety fuse
Inventor:
Olav Noerholm
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Apr 15, 1980
Inventor
Olav Noerholm
Assignee (at issue)
Aktieselkabet Laur. Knudsen Nordisk Electricitets
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.