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.)
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.)
Baird Television Ltd
Original Assignee
Baird Television 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
Priority to BE362867DpriorityCriticalpatent/BE362867A/xx
Application filed by Baird Television LtdfiledCriticalBaird Television Ltd
Priority to GB2841728Aprioritypatent/GB324029A/en
Publication of GB324029ApublicationCriticalpatent/GB324029A/en
Kopiark omfattende et synligt billede repræsenterende instruktioner, spørgsmål eller udsagn og markeringsområder beregnet til at blive afkrydset svarende til det svar, der udvælges.