Andrew D. MALCOLM

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Edmonton, CA

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Patents Grantslast 30 patents

Information Patent Grant
Downhole shock assembly and method of using same
- Patent number 9,593,547
- Issue date Mar 14, 2017
- National-Oilwell DHT, L.P.
- Andrew D. Malcolm
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DOWNHOLE SHOCK ASSEMBLY AND METHOD OF USING SAME
- Publication number 20150034387
- Publication date Feb 5, 2015
- NATIONAL OILWELL DHT, L.P.
- Andrew D. MALCOLM
- E21 - EARTH DRILLING MINING