| 摘要 |
<p>1,019,180. Casting. UNITED STATES PIPE & FOUNDRY CO. Dec. 31, 1964 [Jan. 29, 1964], No. 53101/64. Heading B3F. A pouring trough for a centrifugal casting machine comprises inner and outer members e.g. of steel, secured at one end so that they may move relatively to one another under thermal stress.</p> |
