Patent FR473046A successfully refreshed from Google Patents.
FR473046A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Acoustic system, applicable to phonographs, microphones, musical instruments, horns and hearing aids
Assignee: Individual
•
Filing: 1913-09-04
•
Granted: 1914-12-28
•
Expires: 1933-09-04
Abstract
No abstract record available.
Inventors
- 👤 Lecomte Celinat
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345
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.