Drilldown: Patents

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Patents > Grant date: 1920 - 1929 & National tech categories: None & Number of diagram pages: 5-7

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Tech fields:
None (8) · airplane (8) · stability (6) · rudder (4) · design (4) · HTA (4) · fuselage (4) · frame (4) · LTA (3) · navigation (3) · construction (3) · instrument (2) · propeller (2) · propulsion (2) · airship (2) · steering (2) · compass (2) · landing (2)
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CPCs:
CPC B64C17/00 (4) · CPC B64C2700/6295 (2) · CPC B64B1/00 (2) · CPC B64C3/385 (2) · CPC B64B1/40 (2) · CPC B64C33/00 (2) · CPC B64C2700/6212 (2) · CPC B64C3/00 (2)
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Citations from after 1930:
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