Improvements in or relating to Devices including a Glow-Discharge Indicator Tube for Reproducing Signs and Glow-Discharge Tubes for Use in Such Devices.
摘要
申请公布号
GB1156877(A)
申请公布日期
1969.07.02
申请号
GB19670052469
申请日期
1967.11.17
申请人
PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES LIMITED
