Robert G. Griffith

Follow

Person

Poland, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Work guide for pipe reeling machines and the like and process for t...
- Patent number 4,044,582
- Issue date Aug 30, 1977
- Youngstown Sheet and Tube Company
- Robert G. Griffith
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of producing seamless tube mill piercer mandrel
- Patent number 3,990,330
- Issue date Nov 9, 1976
- Youngstown Sheet and Tube Company
- Bertrand M. Reiley
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR