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Symbol indication drum
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Patent number 4,036,134
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Issue date Jul 19, 1977
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Kabushiki Kaisha Sankyo Seiki Seisakusho
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Takashi Funaki
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B44 - DECORATIVE ARTS
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3451056
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Patent number 3,451,056
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Issue date Jun 17, 1969
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3200896
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Patent number 3,200,896
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Issue date Aug 17, 1965
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G01 - MEASURING TESTING
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3185229
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Patent number 3,185,229
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Issue date May 25, 1965
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G01 - MEASURING TESTING
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3123659
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Patent number 3,123,659
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Issue date Mar 3, 1964
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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3008608
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Patent number 3,008,608
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Issue date Nov 14, 1961
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G01 - MEASURING TESTING
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2516217
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Patent number 2,516,217
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Issue date Jul 25, 1950
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G01 - MEASURING TESTING
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2361572
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Patent number 2,361,572
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Issue date Oct 31, 1944
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G01 - MEASURING TESTING
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1554685
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Patent number 1,554,685
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Issue date Sep 22, 1925
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G01 - MEASURING TESTING