DE594596C
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Storm protection for tethered balloons
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DE592108C
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Inflatable dinghy with bellows
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DE587554C
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Wind chop device, especially for tethered balloons
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DE574324C
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Captive balloon
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DE555655C
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Valve for airships, balloons etc. like
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DE573956C
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Device for regulating the ballonet pressure in balloons
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DE573841C
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Single boats of normal boat shape that can be coupled together to form a boat of normal shape
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DE494760C
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Folding boat
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DE501360C
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Device for the automatic regulation of the pressure in airships and balloons
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DE494759C
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Folding boat
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DE482605C
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Bow strap
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DE499888C
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Valve for free balloons
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GB296702A
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Valves for airships, balloons and the like
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DE481604C
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Valve for airships, balloons etc. like
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DE542470C
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Captive balloon with gas space that can be changed in volume
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DE513774C
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Potato harvester with two crawler wheels working over a coulter provided with upwardly curved side edges
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DE528214C
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Captive balloon with controllable fins
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DE552875C
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Fastening of the sealing strips of folding boats
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DE540234C
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Captive balloon with bulbous fins
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DE552571C
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Folding boat
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