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
GB1631942A
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 GB1631942ApriorityCriticalpatent/GB561530A/en
Publication of GB561530ApublicationCriticalpatent/GB561530A/en
561,530. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd., and GRAY, F. Nov. 18, 1942, No. 16319. [Class 37] Rectifier discs, stamped from larger sheets of coated metal base, have the counter-electrode removed from the cut edges by shot-blasting. In the example 1 is the base metal, 2 a selenium layer and 3 the counterelectrode, the edges of which have been removed at 9 and 13. Specification 544,743 is referred to.
GB1631942A1942-11-181942-11-18Improvements in or relating to the manufacture of electric current rectifier discs
ExpiredGB561530A
(en)