| 摘要 |
765,858. Suction cleaners. HOOVER, Ltd. Jan. 4, 1955 [Jan. 7, 1954; Jan. 7, 1954; May 7, 1954], No. 252/55. Drawings to Specification. Classes 8(1) and 8(2) The subject-matter of this Specification is identical with that described in Specification 765,857 but the claims differ. |
