John M. Holford

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Oakton, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Correcting frequency errors in frequency difference of arrival geol...
- Patent number 9,797,987
- Issue date Oct 24, 2017
- Zeta Associates, Inc.
- John M. Holford
- G01 - MEASURING TESTING
Information Patent Grant
Active suspension for a marine platform
- Patent number 7,418,324
- Issue date Aug 26, 2008
- VSSL Commercial, Inc.
- Malcolm A. Swinbanks
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Dynamic degaussing system
- Patent number 7,113,384
- Issue date Sep 26, 2006
- VSSL Commercial, Inc.
- Malcolm A. Swinbanks
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Electromagnetic active vibration control system and electromagnetic...
- Patent number 6,974,006
- Issue date Dec 13, 2005
- VSSL Commercial, Inc.
- Christopher E. Ruckman
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Optical monitoring system apparatus
- Patent number 5,708,470
- Issue date Jan 13, 1998
- Condor Systems, Inc.
- John M. Holford
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
CORRECTING FREQUENCY ERRORS IN FREQUENCY DIFFERENCE OF ARRIVAL GEOL...
- Publication number 20140104108
- Publication date Apr 17, 2014
- Zeta Associates, Inc.
- John M. Holford
- G01 - MEASURING TESTING
Information Patent Application
Active suspension for a marine platform
- Publication number 20050278094
- Publication date Dec 15, 2005
- Malcolm A. Swinbanks
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Application
Dynamic degaussing system
- Publication number 20040042150
- Publication date Mar 4, 2004
- Malcolm A. Swinbanks
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Application
Electromagnetic active vibration control system and electromagnetic...
- Publication number 20020088678
- Publication date Jul 11, 2002
- Christopher E. Ruckman
- G05 - CONTROLLING REGULATING