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.)
APPLIC DES SCIENCES ET DES ARTS SA
Original Assignee
APPLIC DES SCIENCES ET DES ARTS SA
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Filing date
Publication date
Application filed by APPLIC DES SCIENCES ET DES ARTS SAfiledCriticalAPPLIC DES SCIENCES ET DES ARTS SA
Priority to ES0025163UpriorityCriticalpatent/ES25163Y/en
Publication of ES25163UpublicationCriticalpatent/ES25163U/en
Application grantedgrantedCritical
Publication of ES25163YpublicationCriticalpatent/ES25163Y/en
Holding Or Fastening Of Disk On Rotational Shaft
(AREA)
Manufacture Of Macromolecular Shaped Articles
(AREA)
Abstract
Improved phonograph disc comprising an image or a text visible through sheets of transparent plastic material that are engraved with the phonographic groove, characterized in that the sheets of plastic material are of a slightly smaller diameter than that of the attached disc, and the core of the disc is provided in its periphery with a widening or flange that retains the sheets of plastic material, as well as the images, protecting their edges. (Machine-translation by Google Translate, not legally binding)
Electrographic instructive sheet representing a table of adding and multiplying, combined with a luminous control in the light sector. (Machine-translation by Google Translate, not legally binding)