|
|
||
|
|
|
|
Reference [15] is:
T.R. Zeigler, Collapsible self-supporting structures, Us Patent No. 4,026,313 (1977).
[16] C. Hoberman, Radial expansion/retraction truss structures, US Patent No 5,024,031 (1991).
From the same paper as the previous 4 images.
Page 84 / 114