William D. Coski

Follow

Person

Mercer Island, WA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Impact kerfing rock cutter and method
- Patent number 5,028,092
- Issue date Jul 2, 1991
- Coski Enterprises, Ltd.
- William D. Coski
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Reciprocably supported dual drive member and features thereof
- Patent number 4,332,420
- Issue date Jun 1, 1982
- William D. Coski
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill rod stabilization means
- Patent number 3,934,945
- Issue date Jan 27, 1976
- Ingersoll-Rand Company
- William H. Hamilton
- E21 - EARTH DRILLING MINING