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Geza Hivessy
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Budapest XV, HU
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Patents Grants
last 30 patents
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Patent Grant
Heat exchanger apparatus, particularly for hybrid heat pumps operat...
Patent number
5,150,749
Issue date
Sep 29, 1992
Energiagazdalkodasi Intezet
Gyorgy Bergmann
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Process and apparatus to improve the power factor of compressor-ope...
Patent number
4,967,566
Issue date
Nov 6, 1990
Energiagazdalkodasi Intezet
Gyorgy Bergmann
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Heat exchange pipe for heat transfer
Patent number
4,881,596
Issue date
Nov 21, 1989
Gyorgy Bergmann
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Multi-stage heat pump of the compressor-type operating with a solution
Patent number
4,688,397
Issue date
Aug 25, 1987
Energiagazdalkodasi Intezet
Arpad Bakay
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Hybrid heat pump
Patent number
4,481,783
Issue date
Nov 13, 1984
Energiagazdalkodasi Intezet
Peter Pecz
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...