Patent FR439449A successfully refreshed from Google Patents.
FR439449A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method and devices for obtaining relief in cinematographic projections
Assignee: GUIDO SEGRE
•
Filing: 1911-04-07
•
Granted: 1912-06-13
•
Expires: 1931-04-07
Abstract
No abstract record available.
Inventors
- 👤 Guido Segre
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 06:43
CPC Classifications
G; G03; G03B; G03B35/00
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.