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Patents > Office : CH or MX or Other & Applicant type: COMPANY & Grant date: 1919 & Number of text pages: 3-4

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frame (6) · design (5) · construction (5) · Airship (5) · fuselage (4) · LTA (3) · Airplane (3) · None (2) · Gas (2) · connections (2) · control (2) · instrument (2) · chassis (2)
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