Drilldown: Patents
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Patents > Supplementary to patent:
Patent ES-1906-38692 
& National tech categories :
FR 6.4 or
USPC 423/656
& National tech categories :
FR 6.4 or
USPC 423/656 Use the filters below to narrow your results.
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Airship (1) ·
balloon (1) ·
Balloons (3) ·
construction (1) ·
design (4) ·
frame (2) ·
gas (1) ·
LTA (5) ·
nacelle (1) ·
navigation (1) ·
rudder (1) ·
semi-rigid (1) ·
stability (1) ·
subsystem (4) ·
whole (1)
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