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
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.)
HORACE GEORGE BARWELL
Eastern Telegraph Co Ltd
Original Assignee
HORACE GEORGE BARWELL
Eastern Telegraph Co Ltd
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 HORACE GEORGE BARWELL, Eastern Telegraph Co LtdfiledCriticalHORACE GEORGE BARWELL
Application grantedgrantedCritical
Publication of GB191316435ApublicationCriticalpatent/GB191316435A/en