CPC B61L5/1818
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CPC B61L5/1818 is a patent class for xyz.[1][2]
References
This wiki has 1 patents in category "CPC B61L5/1818".
Patents in category CPC B61L5/1818
- Patent US-1908-922709 (English title: Signaling apparatus for aerial machines, Inventors: James Means, Filing date: 1908-07-01)
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