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Refrigeration cycle
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Patent number 6,857,287
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Issue date Feb 22, 2005
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Altech Controls Corporation
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Richard Herman Alsenz
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Aircraft navigational plotter
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Patent number 6,134,796
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Issue date Oct 24, 2000
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Altech Controls Corporation
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Jeffrey W. Johnson
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Self-adjusting valve
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Patent number 6,105,379
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Issue date Aug 22, 2000
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Altech Controls Corporation
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Richard H. Alsenz
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Liquid cooling of discharge gas
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Patent number 5,692,387
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Issue date Dec 2, 1997
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Altech Controls Corporation
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Richard H. Alsenz
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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78050588 - DON'T LEAVE THE GROUND WITHOUT IT.
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Serial number 78050588
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Filing date Feb 28, 2001
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Altech Controls Corporation
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10 - Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth
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74280506 - XPRT
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Serial number 74280506
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Registration number 1752349
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Filing date May 29, 1992
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Altech Controls Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74270669 - SSPC
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Serial number 74270669
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Registration number 1749943
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Filing date Apr 29, 1992
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Altech Controls Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74121781 - SSPC
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Serial number 74121781
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Filing date Dec 10, 1990
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Altech Controls Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74122146 - XPRT 4
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Serial number 74122146
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Registration number 1669257
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Filing date Dec 10, 1990
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Altech Controls Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments