Sikorsky Helicopter (Direct-Lift Aircraft) Patent Print
Patent No. US1994488 · 1935
Invented by Igor Sikorsky
Vintage 1935 patent drawing of the sikorsky helicopter (direct-lift aircraft) by Igor Sikorsky. Museum-quality archival giclée print.
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About This Print
Vintage 1935 patent drawing of the sikorsky helicopter (direct-lift aircraft) by Igor Sikorsky. Museum-quality archival giclée print.
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