Collapsible Patents (Class 206/170)
- Folded blank type (Class 206/175)
- Multiple blanks (Class 206/176)
- Center wall (Class 206/180)
- Horizontally and vertically folded slide flap forms transverse wall (Class 206/181)
- Single center wall folded from bottom (Class 206/182)
- Confronting center walls folded from bottom (Class 206/183)
- Lower margins of center walls connected at horizontal fold (Class 206/184)
- Center walls connected at vertically extending fold, one free end wall (Class 206/185)
- One center wall folded on horizontal line (Class 206/186)
- Doubled center walls folded from different end walls (Class 206/188)
- Sidewalls folded from unitary bottom wall (Class 206/189)