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
GB24627/29A
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.)
CONRAD ALBERT FELSING
Original Assignee
CONRAD ALBERT FELSING
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 CONRAD ALBERT FELSINGfiledCriticalCONRAD ALBERT FELSING
Publication of GB317328ApublicationCriticalpatent/GB317328A/en
317,328. Felsing, C. A., (Assignee of Fabrik V. Metlitzky). Aug. 13, 1928, [Convention date]. No Patent granted (Sealing fee not paid). Papers with multiple sensitive layers.-Index cards have one or both faces coated with a lightsensitive emulsion so that photographs of criminals, &c., or their signatures may be directly produced thereon and used for identification purposes. An opaque protective sheet is placed over each coated face and is perforated so that it may be removed easily when the card is to be used.
GB24627/29A1928-08-131929-08-12Improvements in card index cards
ExpiredGB317328A
(en)