CPC B63B21/663
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CPC B63B21/663 is a patent class for xyz.[1][2]
References
This wiki has 1 patents in category "CPC B63B21/663".
Patents in category CPC B63B21/663
- Patent US-1914-1104254 (English title: Strut-cover of stream-line surface, Inventors: Gustav R. Eddelbuttel-Reimers, Filing date: 1913-12-08)
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