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
GB1164438A
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.)
JOHN ARTHUR DUCKWORTH
WHITTAKER BROS ACCRINGTON Ltd
Original Assignee
JOHN ARTHUR DUCKWORTH
WHITTAKER BROS ACCRINGTON 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 JOHN ARTHUR DUCKWORTH, WHITTAKER BROS ACCRINGTON LtdfiledCriticalJOHN ARTHUR DUCKWORTH
Priority to GB1164438ApriorityCriticalpatent/GB511880A/en
Publication of GB511880ApublicationCriticalpatent/GB511880A/en