David J. Sheffield

Follow

Person

Hemel Hempstead, Hertfordshire, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Breakstem riveting tool with stem disposal device
- Patent number 4,275,583
- Issue date Jun 30, 1981
- Terence Gilbert
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Breakstem riveting tool with stem disposal device
- Patent number 4,275,582
- Issue date Jun 30, 1981
- David J. Sheffield
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...