Ching-Keung Lam

Follow

Person

Pearl Island, Castle Peak, NT, HK

People

Patents Grantslast 30 patents

Information Patent Grant
Pivoted clamp
- Patent number 5,457,857
- Issue date Oct 17, 1995
- Ching-Keung Lam
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...