Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
Load children
B64
AIRCRAFT; AVIATION; COSMONAUTICS
Load children
B64B
LIGHTER-THAN AIR AIRCRAFT
Load children
B64B1/58
Arrangements or construction of gas-bags; Filling arrangements
Load children Filter patents View analytics View as hierarchy
B64B1/60
Gas-bags surrounded by separate containers of inert gas
Filter patents View analytics View as hierarchy