Drilldown: Patents

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Patents > National tech categories : CH 129b or USPC 244/30 & Number of claims: 7-40

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LTA (11) · airplane (7) · navigation (6) · frame (6) · car (5) · design (4) · stability (4) · safety (4) · propulsion (4) · wings (3) · whole (3) · propeller (3) · landing (3) · balloon (3)
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