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FR1329367A
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Self-priming centrifugal pump
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US3111819A
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Evaporator with oil return means
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Self-fired heater and fan unit
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Self-priming centrifugal pump
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Air eliminator for rotary mechanical seals in fluid pumps
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Flexible coupler
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Air separator fitting for hydronic system
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Air separator fitting for hydronic systems
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Condensers
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DE1161304B
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Method and device for sending and receiving telegraph signals
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GB917709A
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Method and apparatus for signal transmission of alternate two-tone signals
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US3059582A
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Motor pump unit
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Angle encoding apparatus
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Method and apparatus for maintaining rotating pump seals
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Control apparatus and method for unloading compressors
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Printing telegraph selectrive signaling system
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Rotary pump
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Alternate tone receiver and method of signal transmission and reception
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GB856886A
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Centrifugal pump
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US2937057A
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Arrangement for lubricating sleeve bearings
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