Drilldown: Patents

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Patents > Office : BE or Other & Applicant type: None & CPCs : CPC B22D33/00 or CPC B64B1/00 or CPC B64C2700/6218

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None (4)
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Tech fields:
LTA (31) · propulsion (14) · navigation (13) · None (13) · balloon (12) · frame (12) · car (9) · propeller (9) · rudder (8) · flapping (7) · hybrid (4) · control (4) · dirigible (3) · sail (3)
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Citations from after 1930:
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Showing below up to 57 results in range #1 to #57.

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