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Post Info TOPIC: Gyrodyne patents
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Gyrodyne patents
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Geoffrey G. Clewlow original design for the GCA-24, 1952:

http://www.google.com/patents/USD166851



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Peter J. Papadakos compound helicopter design, 1953:

http://www.google.com/patents/USD168652



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Edward W. Strong compound helicopter design, 1953:

http://www.google.com/patents/USD170247



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David F. Gebhard / Edward W. Strong single-seat coaxial-rotor helicopter design, 1954:

http://www.google.com/patents/USD172467



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David F. Gebhard original design for the GCA-32, 1954:

http://www.google.com/patents/USD172712



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Peter J. Papadakos early design for the Gyroliner, 1954:

http://www.google.com/patents/USD172721



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Peter J. Papadakos compound coaxial design, 1954:

http://www.google.com/patents/US2665859



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Peter J. Papadakos coaxial-rotor helicopter design, 1955:

http://www.google.com/patents/USD175852



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Peter J. Papadakos 1955 design:

http://www.google.com/patents/USD176377



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Peter J. Papadakos original GCA-35 design, 1956:

http://www.google.com/patents/USD177425



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Peter J. Papadakos coaxial-rotor heavy-lift helicopter design, 1956:

http://www.google.com/patents/USD177426



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Peter J. Papadakos coaxial-rotor design (GCA-33?), 1956:

http://www.google.com/patents/USD177427



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Peter J. Papadakos compound design, 1956:

http://www.google.com/patents/USD178081



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Peter J. Papadakos 1957 design (I presume is a heavy-lifter):

http://www.google.com/patents/USD180958



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Peter J. Papadakos 1959 design:

http://www.google.com/patents/USD186478



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