Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB130051A
Inventor
Desmond Sydney Ridler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLCfiledCriticalStandard Telephone and Cables PLC
Priority to GB130051ApriorityCriticalpatent/GB691947A/en
Publication of GB691947ApublicationCriticalpatent/GB691947A/en
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/38—Cold-cathode tubes
H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/007—Sequential discharge tubes
Landscapes
Emergency Protection Circuit Devices
(AREA)
Abstract
691,947. Cold-cathode tubes. STANDARD TELEPHONES & CABLES, Ltd. June 11, 1948, No. 1300/51. Divided out of 691,901. Drawings to Specification. Class 39(i) [Also in Group XL(c)] The subject-matter of this Specification is identical with part of that described in Specification 691,901 but the claims differ. Specifications 636,668, [Group XL(c)], and 639,827 also are referred to.
GB130051A1948-06-111948-06-11Improvements in or relating to gas-filled electric discharge tubes and circuit arrangements therefor
ExpiredGB691947A
(en)