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Snowmaking method and apparatus
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Patent number 4,345,439
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Issue date Aug 24, 1982
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Vencraft Corp.
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Robert W. Gundlach
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Reinforced ice matrix
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Patent number 4,057,967
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Issue date Nov 15, 1977
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Suntech, Inc.
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William L. Hill
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Apparatus for preparing ice
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Patent number 3,959,981
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Issue date Jun 1, 1976
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Luzon L. Anderson
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1496625
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Patent number 1,496,625
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Issue date Jun 3, 1924
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1348352
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Patent number 1,348,352
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Issue date Aug 3, 1920
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1339659
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Patent number 1,339,659
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Issue date May 11, 1920
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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921370
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Patent number 921,370
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Issue date May 11, 1909
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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675965
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Patent number 675,965
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Issue date Jun 11, 1901
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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660772
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Patent number 660,772
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Issue date Oct 30, 1900
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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654149
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Patent number 654,149
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Issue date Jul 24, 1900
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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587840
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Patent number 587,840
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Issue date Aug 10, 1897
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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276508
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Patent number 276,508
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Issue date Apr 24, 1883
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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250235
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Patent number 250,235
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Issue date Nov 29, 1881
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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126109
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Patent number 126,109
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Issue date Apr 23, 1872
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...