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Strobe tuner
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Patent number 5,877,443
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Issue date Mar 2, 1999
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Peterson Elecro-Musical Products, Inc.
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Gregory E. Arends
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Stepper motor system
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Patent number 5,038,088
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Issue date Aug 6, 1991
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Gregory E. Arends
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G05 - CONTROLLING REGULATING
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Motor system
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Patent number 4,779,031
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Issue date Oct 18, 1988
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Intellico, Inc.
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Gregory E. Arends
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G05 - CONTROLLING REGULATING