| 摘要 |
802,772. Respiratory appliances. FEARON, E. T. H. June 3, 1957 [Dec. 4, 1956], No. 36973/56. Class 81 (2) A breathing tube appliance for use by a swimmer comprises two tubes 1, 1a open at their upper ends and joined at their lower ends to a union 2 carrying a mouthpiece 3. The upper ends of the tubes carry rubber attachment pieces 4, 4a for holding them firmly to the head band of goggles. |
