CPC B64B1/04
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Classification tree:[1]
- CPC B64B1/00: Lighter-than-air aircraft
- CPC B64B1/02: Non-rigid airships (CPC B64B1/58 takes precedence; balloons CPC B64B1/40)
- CPC B64B1/04: the profile being maintained by ties or cords connecting opposite surfaces
- CPC B64B1/02: Non-rigid airships (CPC B64B1/58 takes precedence; balloons CPC B64B1/40)
| Enclosing categories | CPC B64B1/02 |
|---|---|
| Subcategories | |
| Keywords | LTA |
| Start year | |
| End year |
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