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Patents > Year granted: 1920 & Office: DE & Citations from after 1930: None

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CPC B64C3/00 (8) · None (7) · CPC B64C17/00 (6) · CPC B64C35/00 (6) · CPC B64C1/12 (4) · CPC B64C11/04 (3) · CPC B64C2700/6212 (3) · CPC B64C13/00 (3) · CPC B64C2700/6235 (3) · CPC B64C2700/6233 (3) · CPC B64F2700/6261 (3) · CPC B64C11/00 (2) · CPC B64C2700/6218 (2) · CPC B64C25/62 (2) · CPC B64C2700/6256 (2) · CPC B64C3/26 (2) · CPC B64C3/385 (2) · CPC B64C2001/0063 (2) · CPC B64C11/36 (2) · CPC B64F2700/6226 (2)
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