Drumco Inc.

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Middlesex, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Drill bit and drill assembly
- Patent number 4,805,709
- Issue date Feb 21, 1989
- Drumco
- Walter F. Johnsey
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit assembly
- Patent number 4,541,494
- Issue date Sep 17, 1985
- Drumco
- Donald D. Drummond
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit assembly having improved operational life
- Patent number 4,540,055
- Issue date Sep 10, 1985
- Drumco
- Donald D. Drummond
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for lubricating a drill bit
- Patent number 4,508,183
- Issue date Apr 2, 1985
- Drumco
- Donald D. Drummond
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
78321684 - DRUELL
- Serial number 78321684
- Filing date Oct 31, 2003
- Drumco Inc.
- 17 - Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes
Information Trademark
73470421
- Serial number 73470421
- Registration number 1320366
- Filing date Mar 15, 1984
- Drumco
- 7 - Machines and machine tools
Information Trademark
73470422 - DRUMCO
- Serial number 73470422
- Registration number 1314353
- Filing date Mar 15, 1984
- Drumco
- 7 - Machines and machine tools