Improvements in means for producing light comprising in combination an electric discharge lamp and an electric incandescent lamp whose filament is in series with the discharge path
摘要
申请公布号
GB486418(A)
申请公布日期
1938.06.02
申请号
GB19380005130
申请日期
1938.02.18
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED;THE GENERAL ELECTRIC COMPANY LIMITED
