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Rotary compressor
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1989-08-15
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Compressor lubrication system including shaft seals
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1922-03-14
Pump
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1996-12-24
Rotary compressor having oil pumped through a vertical drive shaft
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1963-10-01
High pressure centrifugal compressor
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1900-01-01
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1972-09-05
Air pressure intensifier
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Stuffing-box.
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1998-07-21
Reciprocating piston variable displacement type compressor improved to distribute lubricating oil sufficiently
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Bomba o motor rotatorio perfeccionado
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1928-07-03
Compressor
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1954-02-09
Vacuum pump
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1924-09-23
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1941-06-17
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1915-12-07
Rotary air compressor or pump.
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Винтовой компрессор
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1957-01-02
Bearing assemblies and the lubrication thereof
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1900-05-12
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1901-04-30
Rotary pump.
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1945-02-16
Improvements in or relating to air compressing systems or apparatus