| 摘要 |
1300280 Sliding clasp fasteners OPTIHOLDING AG 13 April 1970 [22 April 1969] 17406/70 Heading E2S A thermoplastics slider comprises top and bottom plates 1, 2 with guide tracks 3 for the rows of interlocking elements (not shown), a core 4 and lateral boundary flanges 5, the said guide tracks being reinforced by hollow (or solid) pins 6 of metal or hard plastics material to impart resistance to high pressures exerted on the slider. |
