Drilldown: Patents

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Patents > Year filed: 1902 & Applicant person : Samuel W. Irwin or None

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LTA (21) · balloon (14) · parachute (9) · propulsion (8) · gas (7) · fun (7) · frame (7) · propeller (5) · whole (5) · navigation (5) · airplane (4) · subsystem (4) · stability (4) · pressure (3) · hybrid (3) · design (3) · car (3) · captive (3)
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