IP Library Granted Patent US 4,317,751
Granted Patent Utility
US 4,317,751 · App. 06/163,375

Thallium doped potassium iodide filter

Inventors: Robert J. Kraushaar, Kevin B. Ward
Patented Case View Patent ↗
Granted: Mar 2, 1982 Filed: Jun 26, 1980
Inventors
Robert J. Kraushaar
Kevin B. Ward
Assignee (at issue)
International Telephone and Telegraph 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.

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 4,317,751
App. No.
06/163,375
Filed
1980-06-26
Granted
1982-03-02
Kind
A