| 摘要 |
903,543. Reciprocating pumps. DELLER, A. W. Oct. 20, 1958 [Oct. 21, 1957], No. 29117/61. Divided out of 903,542. Drawings to Specification. Class 102(1). The subject-matter of this Specification is substantially the same as that described in Specification 903,542, but the claims are concerned with driving shafts housed within a casing which has a central passage in which the pump block lies. |
