Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
Load children
B64
AIRCRAFT; AVIATION; COSMONAUTICS
Load children
B64C
AEROPLANES; HELICOPTERS
Load children
11/00
Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
Load children Filter patents View analytics View as hierarchy
B64C11/46
Arrangements of, or constructional features peculiar to, multiple propellers
Load children Filter patents View analytics View as hierarchy
B64C11/48
Units of two or more coaxial propellers
Filter patents View analytics View as hierarchy