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F05B
F05B2220/00
F05B2220/30
F05B2220/302
F05B2220/309
ClassID:
144519
⎘
F05B2220/309 - CPC Classification
Classification description:
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#1
20160333782
2016-11-17
Multiple turboshaft engine control method and system for helicopters
#2
20130139518
2013-06-06
Multiple turboshaft engine control method and system for helicopters
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