David J. Kalhok

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Marion, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Remote tracking and communication device
- Patent number 8,031,077
- Issue date Oct 4, 2011
- SecureAlert, Inc.
- Bruce Derrick
- G01 - MEASURING TESTING
Information Patent Grant
Remote tracking and communication device
- Patent number 7,804,412
- Issue date Sep 28, 2010
- SecureAlert, Inc.
- Bruce Derrick
- G01 - MEASURING TESTING
Information Patent Grant
Remote tracking and communication device
- Patent number 7,330,122
- Issue date Feb 12, 2008
- RemoteMDx, Inc.
- Bruce G. Derrick
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
REMOTE TRACKING AND COMMUNICATION DEVICE
- Publication number 20100328063
- Publication date Dec 30, 2010
- SecureAlert, Inc.
- Bruce G. Derrick
- G08 - SIGNALLING
Information Patent Application
REMOTE TRACKING AND COMMUNICATION DEVICE
- Publication number 20080218358
- Publication date Sep 11, 2008
- RemoteMDx
- Bruce G. Derrick
- G08 - SIGNALLING
Information Patent Application
Remote tracking and communication device
- Publication number 20070063853
- Publication date Mar 22, 2007
- Bruce G. Derrick
- G08 - SIGNALLING