| 摘要 |
1,182,642. Valves. KOEHRING CO. 2 March, 1967 [6 July, 1966], No. 47301/69. Divided out of 1,182,641. Heading F2V. [Also in Division F1] The subject-matter of this Specification is identical with that described in Specification 1,182,641 but the claims relate to control valve constructions. |
