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Parachute canopy
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Patent number 4,117,993
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Issue date Oct 3, 1978
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Irvin Industries Canada Ltd.
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Lorenz A. Palm
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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3927850
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Patent number 3,927,850
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Issue date Dec 23, 1975
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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3403876
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Patent number 3,403,876
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Issue date Oct 1, 1968
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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3218007
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Patent number 3,218,007
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Issue date Nov 16, 1965
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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2527553
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Patent number 2,527,553
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Issue date Oct 31, 1950
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B64 - AIRCRAFT AVIATION COSMONAUTICS