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Patents > Year filed: 1907 & Office : DE or GB or SE or US or Other & Inventor country : CH or SE or US & Tech fields : airplane or balloon or wings & Grant date: 1900 - 1909

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FR 6.4 (3) · USPC 244/218 (2) · USPC 244/12.1 (2) · AT 77d (2) · USPC 244/34R (2) · USPC 244/93 (2) · DK 77 (2) · HU V/h (2)
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