US2552940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viewing device for photographic apparatus and cinematographic cameras
Assignee: Pignons S A Ballaigues
•
Filing: 1947-09-12
•
Granted: 1951-05-15
•
Expires: 1967-09-12
Abstract
No abstract record available.
Inventors
- 👤 Cornut Andre-Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:19
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1689268A
Cited
US1795490A
Cited
GB351484A
Cited
GB368603A
Cited
US1897268A
Cited
US2147259A
Cited
US2187246A
Cited
US2437032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |