| 摘要 |
<p>1520066 Cartridge cases A I EGUIA 6 Feb 1976 [29 April 1975] 04804/76 Heading F3A A cartridge ease comprises an outer plastics case 1, an internal bottom piece 3 whose outer diameter is less than the inner diameter of the outer ease to define an annular space therebetween, and an intermediate piece 2 formed by injection of a plastics material into said annular space.</p> |
