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
GB710016A
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.)
Automatic Telephone Manufacturing Co Ltd
BERNARD CHARLES GROH
Original Assignee
Automatic Telephone Manufacturing Co Ltd
BERNARD CHARLES GROH
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 Automatic Telephone Manufacturing Co Ltd, BERNARD CHARLES GROHfiledCriticalAutomatic Telephone Manufacturing Co Ltd
Publication of GB100941ApublicationCriticalpatent/GB100941A/en