FR790909A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Sound diffuser device for loudspeakers
Assignee: LENZOLA LAUTSPRECHER FABRIK G
•
Filing: 1935-06-05
•
Granted: 1935-11-29
•
Expires: 1955-06-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
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.