| 摘要 |
<p>957,908. Automatic exchange systems. WESTERN ELECTRIC CO. Inc. Sept. 21, 1961 [Oct. 31, 1960], No. 33797/61. Drawings to Specification. Heading H4K. The description is identical with that of Specification 957,477 but the claims are directed to the manner in which a single line is selected for service when two or more lines are concurrently calling. U.S.A. Specification 2,636,931 also is referred to.</p> |
