FR994482A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvement in winding and unwinding devices for recording or magnetic sound production apparatus
Assignee: Rene Pare
•
Filing: 1949-07-04
•
Granted: 1951-11-16
•
Expires: 1969-07-04
Abstract
No abstract record available.
Inventors
- 👤 Rene Pare
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43; G11B15/46; G11B15/50
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.