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US5996688A
(en)
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Hydraulic pump jack drive system for reciprocating an oil well pump rod
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US4345734A
(en)
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Adjustable base mount for a walking-beam gas compressor
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US4660426A
(en)
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Pumping unit for actuating a down hole pump with static and dynamic counterweights
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US8083622B1
(en)
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Systems and methods for automatic belt tensioning in low speed, low volume fluid recovery operations
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BE346535A
(cg-RX-API-DMAC7.html)
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US20110240323A1
(en)
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vibratory mechanism for a pile driver and a pile driver
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CN1468344A
(zh)
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用于往复式密闭压缩机的油泵
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US3222940A
(en)
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Counterbalance means
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US4483208A
(en)
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Pumping unit
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US3277730A
(en)
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Counterbalance means
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FR2720808A1
(fr)
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Système pour équilibrer des couples changeants.
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BE346538A
(cg-RX-API-DMAC7.html)
|
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US4492126A
(en)
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Variable leverage oil field pump jack
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US1415852A
(en)
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Fluid compressor
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FR3106860A1
(fr)
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Machine de transvasement de fluide à piston oscillant prismatique motorisée par un moteur Stirling à pistons oscillants prismatiques
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US760596A
(en)
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Pump-head.
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BE1013747A3
(fr)
|
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Dispositif pour creer un mouvement dans un liquide.
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US20230407854A1
(en)
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Long stroke parallel pump
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BE347932A
(cg-RX-API-DMAC7.html)
|
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BE351891A
(cg-RX-API-DMAC7.html)
|
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BE558338A
(cg-RX-API-DMAC7.html)
|
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TNSN92102A1
(fr)
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Mecanisme d'entrainement d'une pompe a mouvement alterne
|
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CA3248046A1
(en)
|
|
LONG-STROKE PARALLEL PUMP
|
|
BE516857A
(cg-RX-API-DMAC7.html)
|
|
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BE414810A
(cg-RX-API-DMAC7.html)
|
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