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2258733
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Issue date Oct 14, 1941
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B24 - GRINDING POLISHING
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2151670
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Patent number 2,151,670
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B24 - GRINDING POLISHING
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2137250
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2064079
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B24 - GRINDING POLISHING
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1988818
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B24 - GRINDING POLISHING
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1949565
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B24 - GRINDING POLISHING
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1945935
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Patent number 1,945,935
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Issue date Feb 6, 1934
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B44 - DECORATIVE ARTS
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1927476
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Patent number 1,927,476
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1918483
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Patent number 1,918,483
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H01 - BASIC ELECTRIC ELEMENTS
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1908048
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B24 - GRINDING POLISHING
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1888589
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1873129
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Patent number 1,873,129
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H01 - BASIC ELECTRIC ELEMENTS
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1748313
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B24 - GRINDING POLISHING
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1670851
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B24 - GRINDING POLISHING
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1624400
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B24 - GRINDING POLISHING
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B24 - GRINDING POLISHING
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1459741
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B24 - GRINDING POLISHING
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1445498
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H01 - BASIC ELECTRIC ELEMENTS
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1253080
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B24 - GRINDING POLISHING
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740319
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B24 - GRINDING POLISHING
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610759
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B24 - GRINDING POLISHING
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521002
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B24 - GRINDING POLISHING
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B24 - GRINDING POLISHING