作者: Swami Tiruchengodu Krishnaswam
DOI:
关键词:
摘要: 1,218,055. Chance selecting device. T. K. R. SWAMI. 17 Feb., 1970, No. 47743/68. Heading A6H. A device consists of a freely rotatable and suitably supported 'barrel with mouth at the side through which numbered spheres are introduced, being securly covered removable, spill proof lid that has hole to is fitted rotatable, weighted cradle into falls only one sphere when barrel rotated on its axis. The made metal lead remainder apparatus may be polythene.