Improvements in or relating to electrical apparatus for controlling the detonation of explosive charges and including improved means comprising a momentary contact electric switching means for controlling the detonating circuit
摘要
申请公布号
GB405329(A)
申请公布日期
1934.02.05
申请号
GB19320021879
申请日期
1932.08.04
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;SYDNEY WILLIAM RICHARDS
