Joseph Michael Sparkman

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Norman, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Box-on-box self-stacking substructure for a drill rig
- Patent number 9,488,014
- Issue date Nov 8, 2016
- Unit Corporation
- Joseph Michael Sparkman
- E04 - BUILDING

Patents Applicationslast 30 patents

Information Patent Application
BOX-ON-BOX SELF-STACKING SUBSTRUCTURE FOR A DRILL RIG
- Publication number 20150143759
- Publication date May 28, 2015
- UNIT CORPORATION
- Joseph Michael Sparkman
- E04 - BUILDING