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Ruler and drawing template
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Patent number D398864
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Issue date Sep 29, 1998
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Binney & Smith Inc.
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Charles W. Dietterich
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D10 - Measuring, testing, or signalling instruments
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Protractor and drawing template
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Patent number D398865
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Issue date Sep 29, 1998
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Binney & Smith Inc.
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Charles W. Dietterich
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D10 - Measuring, testing, or signalling instruments
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Ruler and drawing stencil
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Patent number D398250
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Issue date Sep 15, 1998
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Binney & Smith Inc.
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Charles W. Dietterich
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D10 - Measuring, testing, or signalling instruments
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Ruler with drawing curves
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Patent number D396422
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Issue date Jul 28, 1998
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Binney & Smith Inc.
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Charles W. Dietterich
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D10 - Measuring, testing, or signalling instruments