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Classification
B63B
B63B2750/00
ClassID:
71140
⎘
B63B2750/00 - CPC Classification
Classification description:
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#1
20170073055
2017-03-16
CENTRIFUGAL PROPULSION APPARATUS AND SHIP HAVING SAME
#2
20150017848
2015-01-15
Multi-stage watertight chamber
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