IP Library › Granted Patent US 4,701,384
Granted Patent Utility
US 4,701,384 · App. 07/004,999

Composite coatings on cemented carbide substrates

Inventors: Vinod K. Sarin, Hans E. Hintermann
Patented Case View Patent ↗
Granted: Oct 20, 1987 Filed: Jan 20, 1987
Inventors
Vinod K. Sarin
Hans E. Hintermann
Assignee (at issue)
GTE Laboratories Incorporated

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 4,701,384
App. No.
07/004,999
Filed
1987-01-20
Granted
1987-10-20
Kind
A