John B. Farr

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole seismic source
- Patent number 4,040,003
- Issue date Aug 2, 1977
- Standard Oil Company (Indiana)
- Pierre A. Beynet
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Downhole seismic source
- Patent number 4,033,429
- Issue date Jul 5, 1977
- Standard Oil Company (Indiana)
- John B. Farr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combined electret hydrophone and transmission line
- Patent number 4,011,540
- Issue date Mar 8, 1977
- Standard Oil Company (Indiana)
- John B. Farr
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL