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Garage door keyless entry system
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Patent number D391507
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Issue date Mar 3, 1998
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The Chamberlian Group, Inc.
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Loren E. Doppelt
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D10 - Measuring, testing, or signalling instruments
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Garage door opener control
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Patent number D381962
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Issue date Aug 5, 1997
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The Chamberlain Group, Inc.
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Loren E. Doppelt
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D13 - Equipment for production, distribution, or transformation of energy
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Transmitter for garage door opener
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Patent number D380696
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Issue date Jul 8, 1997
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The Chamberlain Group, Inc.
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Loren E. Doppelt
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D10 - Measuring, testing, or signalling instruments
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Wall mounted garage door control
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Patent number D378200
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Issue date Feb 25, 1997
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The Chamberlain Group, Inc.
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Loren E. Doppelt
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D10 - Measuring, testing, or signalling instruments
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