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Patents > Office : DE or GR or UN & National tech categories: DE 77h.4

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LTA (36) · balloon (17) · gas (8) · frame (8) · airship (6) · compartments (6) · material (6) · metal (4) · fabric (4) · valve (4) · rigid (3) · subsystem (3) · ballonet (3) · Tragkörper (3)
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Showing below up to 42 results in range #1 to #42.

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