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Reflective compass device
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Patent number 6,286,220
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Issue date Sep 11, 2001
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Directional Robotics, Inc.
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Robert Harrison
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G01 - MEASURING TESTING
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Electronic compass
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Patent number 6,070,333
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Issue date Jun 6, 2000
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Siemens Aktiengesellschaft
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Michael Kutzner
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G01 - MEASURING TESTING
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Attitude sensor
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Patent number 5,452,519
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Issue date Sep 26, 1995
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3D Instruments Limited
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Timothy R. Crocker
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G01 - MEASURING TESTING
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Compass device
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Patent number 5,448,835
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Issue date Sep 12, 1995
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W. Stan Lewis
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G01 - MEASURING TESTING
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Electronic compass
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Patent number 4,887,358
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Issue date Dec 19, 1989
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Insik Kang
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G01 - MEASURING TESTING
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Heading sensor
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Patent number 4,656,750
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Issue date Apr 14, 1987
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Standard Telephones and Cables Public Limited Company
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Gilles D. Pitt
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G01 - MEASURING TESTING
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Magnetic angular position sensor
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Patent number 4,614,041
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Issue date Sep 30, 1986
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Standard Telephones and Cables Public Limited Company
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Kenneth S. Darton
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G01 - MEASURING TESTING
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Remotely readable fiber optic compass
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Patent number 4,577,414
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Issue date Mar 25, 1986
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The United States of America as represented by the United States Department o...
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Albert Migliori
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G01 - MEASURING TESTING