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Process and apparatus for molding jewelry
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Patent number 6,299,818
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Issue date Oct 9, 2001
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T. R. Hawkinson Ltd.
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Todd R. Hawkinson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Process and apparatus for molding jewelry
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Patent number 6,171,093
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Issue date Jan 9, 2001
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T. R. Hawkinson Ltd.
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Todd R. Hawkinson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Molding method
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Patent number 4,946,637
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Issue date Aug 7, 1990
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Victor J. Masciarelli
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2351080
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Patent number 2,351,080
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Issue date Jun 13, 1944
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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2241365
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Patent number 2,241,365
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Issue date May 6, 1941
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B44 - DECORATIVE ARTS
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2231556
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Patent number 2,231,556
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Issue date Feb 11, 1941
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B24 - GRINDING POLISHING
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2194050
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Patent number 2,194,050
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Issue date Mar 19, 1940
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B24 - GRINDING POLISHING
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2163814
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Patent number 2,163,814
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Issue date Jun 27, 1939
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A44 - HABERDASHERY JEWELLERY
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1997500
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Patent number 1,997,500
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Issue date Apr 9, 1935
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A44 - HABERDASHERY JEWELLERY
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1908774
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Patent number 1,908,774
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Issue date May 16, 1933
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B44 - DECORATIVE ARTS
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1822796
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Patent number 1,822,796
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Issue date Sep 8, 1931
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1622775
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Patent number 1,622,775
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Issue date Mar 29, 1927
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B44 - DECORATIVE ARTS
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1580076
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Patent number 1,580,076
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Issue date Apr 6, 1926
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C03 - GLASS MINERAL OR SLAG WOOL
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804034
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Patent number 804,034
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Issue date Nov 7, 1905
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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160967
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Patent number 160,967
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Issue date Mar 16, 1875
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...