| 摘要 |
738,550. Hand trucks. ROCHDALE SHEET METAL CO., Ltd., and MARSH, J. Oct. 8, 1954 [Oct. 19, 1953], No. 28753/53. Class 108 (1). A hand truck which presents its load at a substantially constant level during unloading, comprises double conical springs e supporting a vertically movable platform b guided and maintained horizontal by dovetail section slides at the ends of the truck and by the broad bases of the springs. |
