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Steam-assisted gravity drive system
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Patent number 10,233,896
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Issue date Mar 19, 2019
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Zachary David Wolfe
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Cyclic demand steam supply system
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Patent number 5,080,047
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Issue date Jan 14, 1992
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Charles L. Williams
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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1867143
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Patent number 1,867,143
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Issue date Jul 12, 1932
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES