IP Library › Granted Patent US 4,581,745
Granted Patent Utility
US 4,581,745 · App. 06/691,945

Electric arc melting apparatus and associated method

Inventors: David Mathews, Robert J. Krieger
Patented Case View Patent ↗
Granted: Apr 8, 1986 Filed: Jan 16, 1985
Inventors
David Mathews
Robert J. Krieger
Assignee (at issue)
Timet

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,581,745
App. No.
06/691,945
Filed
1985-01-16
Granted
1986-04-08
Kind
A