CPC Class Codes
E04B 1/19
Three-dimensional framework...
E04B 1/3211
Structures with a vertical ...
E04B 2001/1927
of essentially circular cro...
E04B 2001/1936
Winged profiles, e.g. with ...
E04B 2001/1978
Frameworks assembled from p...
E04B 2001/1981
characterised by the grid t...
E04B 2001/1987
triangular grid
E04B 2001/1996
Tensile-integrity structure...
E04B 2001/3241
Frame connection details
E04B 2001/3276
Panel connection details
E04B 2001/3288
Panel frame details, e.g. f...
E04B 2001/3294
with a faceted surface
E04B 7/10
Shell structures, e.g. of h...
E04C 3/32
of metal E04C3/36 takes pre...