FR939508A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Vibrating membrane intended in particular for microphones, pick-ups, loudspeakers and electro-acoustic devices in general
Assignee: Paul Mousset
•
Filing: 1947-01-03
•
Granted: 1948-11-17
•
Expires: 1967-01-03
Abstract
No abstract record available.
Inventors
- 👤 Paul Mousset
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 23:57
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/02; H04R9/04; H04R9/046; H04R9/047; H04R9/08
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.