John M. Elwell Jr.

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Sudbury, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for clock correction
- Patent number 8,466,835
- Issue date Jun 18, 2013
- The Charles Stark Draper Laboratory, Inc.
- John M. Elwell
- G01 - MEASURING TESTING
Information Patent Grant
Deeply-integrated adaptive GPS-based navigator with extended-range...
- Patent number 6,731,237
- Issue date May 4, 2004
- The Charles Stark Draper Laboratory, Inc.
- Donald E. Gustafson
- G01 - MEASURING TESTING
Information Patent Grant
Geographical navigation using multipath wireless navigation signals
- Patent number 6,693,592
- Issue date Feb 17, 2004
- The Charles Stark Draper Laboratory, Inc.
- John R. Dowdle
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Deeply-integrated adaptive INS/GPS navigator with extended-range co...
- Patent number 6,630,904
- Issue date Oct 7, 2003
- The Charles Stark Draper Laboratory, Inc.
- Donald E. Gustafson
- G01 - MEASURING TESTING
Information Patent Grant
Deeply-integrated adaptive GPS-based navigator with extended-range...
- Patent number 6,331,835
- Issue date Dec 18, 2001
- The Charles Stark Draper Laboratory, Inc.
- Donald E. Gustafson
- G01 - MEASURING TESTING
Information Patent Grant
Optical reference gyro
- Patent number 4,270,044
- Issue date May 26, 1981
- The Charles Stark Draper Laboratory, Inc.
- John M. Elwell
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Systems and methods for positioning using multipath signals
- Publication number 20080198072
- Publication date Aug 21, 2008
- John M. Elwell
- G01 - MEASURING TESTING
Information Patent Application
Deeply-integrated adaptive GPS-based navigator with extended-range...
- Publication number 20020126044
- Publication date Sep 12, 2002
- Donald E. Gustafson
- G01 - MEASURING TESTING
Information Patent Application
Geographical navigation using multipath wireless navigation signals
- Publication number 20020089450
- Publication date Jul 11, 2002
- John R. Dowdle
- G01 - MEASURING TESTING
Information Patent Application
Deeply-integrated adaptive INS/GPS navigator with extended-range co...
- Publication number 20020047799
- Publication date Apr 25, 2002
- Donald E. Gustafson
- G01 - MEASURING TESTING