DE691382C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for the production of records, in particular recording records, from vinyl polymers
Assignee: CELLULOID FABRIK AKT GES DEUTS
•
Filing: 1938-10-29
•
Granted: 1940-05-24
•
Expires: 1958-10-29
Abstract
No abstract record available.
Inventors
- 👤 Dipl-Ing Wilhelm Wehr
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 22:50
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/18; G; G11; G11B; G11B3/00; G11B3/68; G11B3/70; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.