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3806566
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Patent number 3,806,566
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Issue date Apr 23, 1974
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3725315
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Patent number 3,725,315
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Issue date Apr 3, 1973
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3697633
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Patent number 3,697,633
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Issue date Oct 10, 1972
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3425965
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Patent number 3,425,965
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Issue date Feb 4, 1969
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3236664
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Patent number 3,236,664
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Issue date Feb 22, 1966
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3037897
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Patent number 3,037,897
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Issue date Jun 5, 1962
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2592521
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Patent number 2,592,521
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Issue date Apr 8, 1952
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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2284741
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Patent number 2,284,741
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Issue date Jun 2, 1942
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B28 - WORKING CEMENT, CLAY, OR STONE
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1982580
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Patent number 1,982,580
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Issue date Nov 27, 1934
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1931018
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Patent number 1,931,018
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Issue date Oct 17, 1933
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B28 - WORKING CEMENT, CLAY, OR STONE
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1893783
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Patent number 1,893,783
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Issue date Jan 10, 1933
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B28 - WORKING CEMENT, CLAY, OR STONE
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1826529
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Patent number 1,826,529
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Issue date Oct 6, 1931
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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1788748
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Patent number 1,788,748
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Issue date Jan 13, 1931
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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1779481
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Patent number 1,779,481
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Issue date Oct 28, 1930
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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1760713
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Patent number 1,760,713
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Issue date May 27, 1930
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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1756011
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Patent number 1,756,011
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Issue date Apr 22, 1930
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1742411
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Patent number 1,742,411
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Issue date Jan 7, 1930
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1733699
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Patent number 1,733,699
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Issue date Oct 29, 1929
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1732281
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Patent number 1,732,281
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Issue date Oct 22, 1929
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B28 - WORKING CEMENT, CLAY, OR STONE
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1732478
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Patent number 1,732,478
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Issue date Oct 22, 1929
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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1729172
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Patent number 1,729,172
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Issue date Sep 24, 1929
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B28 - WORKING CEMENT, CLAY, OR STONE
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1698242
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Patent number 1,698,242
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Issue date Jan 8, 1929
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B28 - WORKING CEMENT, CLAY, OR STONE
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1684671
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Patent number 1,684,671
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Issue date Sep 18, 1928
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES