摘要 |
1,006,341. Lattice girders. DAVUM. Sept. 26, 1962 [Oct. 27, 1961], No. 36546/62. Heading E1K. [Also in Division B3] The metal framework for a reinforced concrete girder comprises a V- or U-sectioned strip 8 connected by a bent steel wire 6 to steel wires 4 and 5 which may be smooth, notched or twisted. |