Marvin E. Janda

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Ponca City, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole epicyclic motion orbital seismic source
- Patent number 5,321,213
- Issue date Jun 14, 1994
- Conoco Inc.
- Jack H. Cole
- G01 - MEASURING TESTING
Information Patent Grant
Downhole hydraulic rotary seismic source
- Patent number 5,285,023
- Issue date Feb 8, 1994
- Conoco Inc.
- Jack H. Cole
- G01 - MEASURING TESTING
Information Patent Grant
Multiple film width transport adaptor
- Patent number 4,958,170
- Issue date Sep 18, 1990
- Conoco Inc.
- Bernard A. Schwartz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL