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Patents > Filing date: May 1918 & National tech categories: None

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None (3) · Henry Kleckler (3) · ERNST J OHNELL (2)
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CPC B64C3/00 (5) · CPC B64C13/02 (4) · CPC B64C2700/6235 (4) · CPC B64C2700/6295 (4) · CPC B64C17/00 (3) · CPC B64B1/00 (3) · CPC B64F2700/6226 (2) · CPC B64C33/02 (2) · CPC B64C3/18 (2) · CPC B64C3/26 (2) · CPC B64C2700/6215 (2) · CPC B64C3/385 (2) · CPC B64C39/00 (2) · CPC B64C1/26 (2)
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