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Reformed battery grids
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Patent number 9,755,242
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Issue date Sep 5, 2017
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Wirtz Manufacturing Co., Inc.
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John W. Wirtz
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H01 - BASIC ELECTRIC ELEMENTS
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-
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3903575
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Patent number 3,903,575
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Issue date Sep 9, 1975
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3656378
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Patent number 3,656,378
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Issue date Apr 18, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3248780
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Patent number 3,248,780
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Issue date May 3, 1966
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2599857
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Patent number 2,599,857
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Issue date Jun 10, 1952
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H01 - BASIC ELECTRIC ELEMENTS
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2234330
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Patent number 2,234,330
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Issue date Mar 11, 1941
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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1756171
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Patent number 1,756,171
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Issue date Apr 29, 1930
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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893300
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Patent number 893,300
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Issue date Jul 14, 1908
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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541032
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Patent number 541,032
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Issue date Jun 11, 1895
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B28 - WORKING CEMENT, CLAY, OR STONE
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518030
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Patent number 518,030
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Issue date Apr 10, 1894
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B28 - WORKING CEMENT, CLAY, OR STONE
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440548
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Patent number 440,548
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Issue date Nov 11, 1890
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR