Perfections in machines to manufacture cases for single and double discs. (Machine-translation by Google Translate, not legally binding)
NL7812124A
Single and double record sleeve making machine - has blank registering blank cutting and blank creasing parts, with output lines for single and double sleeves respectively
US3580487A
Gramophone record sleeves
GB1149242A
Improvements in or relating to gramophone record sleeves
GB1119823A
Improvements in or relating to gramophone record sleeves
GB1115491A
A gramophone record sleeve
DE1170669B
Process for the production of sleeves, in particular for records
GB973285A
A sleeve or envelope for a gramaphone record or like flat article
