|
US3494578A
(en)
|
|
Centroidally supported modular tetrahedron structure
|
|
US2751172A
(en)
|
|
Flexible kite
|
|
SE125728C1
(fr)
|
|
|
|
CN1925980B
(zh)
|
|
夹板
|
|
US1431521A
(en)
|
|
Truss |
|
US2305817A
(en)
|
|
Structural element, particularly for aircraft
|
|
GB609313A
(en)
|
|
Improvements in or relating to aerofoil structures
|
|
US1428714A
(en)
|
|
Aerofoil
|
|
GB305298A
(en)
|
|
Improvements in or relating to aerofoils and like structures
|
|
GB1061003A
(en)
|
|
Improvements in or relating to structures comprising structural elements joined together
|
|
US2827967A
(en)
|
|
Helicopter rotor blade
|
|
US1818426A
(en)
|
|
Toy airplane
|
|
US1763218A
(en)
|
|
Propeller for airplanes and dirigible balloons
|
|
US1790715A
(en)
|
|
F mazzini |
|
DE565819C
(de)
|
|
Antennenmast
|
|
US1559173A
(en)
|
|
Screw propeller
|
|
GB127844A
(en)
|
|
Improvements in the Construction of and Method of Joining Together, Girders, Beams, Struts and other Frame Members of Air-ships.
|
|
US1743284A
(en)
|
|
Aeroplane
|
|
GB127665A
(en)
|
|
Improvements in the Construction of Girders, Beams, Struts and the like for Air Craft and other purposes.
|
|
US1058701A
(en)
|
|
Veneer structure.
|
|
US1012507A
(en)
|
|
Wooden propeller.
|
|
US2293224A
(en)
|
|
Propeller for aircraft
|
|
US1891681A
(en)
|
|
Framework for the wings of aeroplanes and for other objects
|
|
US1276993A
(en)
|
|
Structural member for airplanes.
|
|
GB147734A
(en)
|
|
Hollow supporting surface for flying machines
|