Steven Edward Hackman

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Edmonton, CA

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Patents Grantslast 30 patents

Information Patent Grant
Retention means for a seal boot used in a universal joint in a down...
- Patent number 9,534,638
- Issue date Jan 3, 2017
- National-Oilwell Varco, L.P.
- Nicholas Ryan Marchand
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Retention Means for a Seal Boot Used in a Universal Joint in a Down...
- Publication number 20110005839
- Publication date Jan 13, 2011
- National-Oilwell Varco, L.P.
- Nicholas Ryan Marchand
- E21 - EARTH DRILLING MINING