FR816003A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to the drive mechanism of sound recording or reproducing devices
Assignee: Koninklijke Philips NV
•
Filing: 1937-01-05
•
Granted: 1937-07-28
•
Expires: 1957-01-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-29 02:40
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28
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.