| 摘要 |
708,284. Filters. SMITH, R. A. G., and HOREMAN, T. J. July 11, 1952 [July 13, 1951], No. 16670/51. Class 46. [Also in Group XXVIII] A cotton filter bag 28 into which water and sediment (from, e.g. an aquarium) are discharged from a chamber 10 by a bulb 37 is secured at its lowest end by a rubber ring 29 about an extension 22 of the chamber 10, and at its upper end in a rigid tubular member 30 detachably supported by a wire handle 31. |
