US2730009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-electric exposure meters
Assignee: MAROCAINE D ACHATS ET DE CONST
•
Filing: 1951-08-22
•
Granted: 1956-01-10
•
Expires: 1971-08-22
Abstract
No abstract record available.
Inventors
- 👤 Poirette Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:48
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209; G01J1/4214
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB522919A
Cited
US2308469A
Cited
FR863453A
Cited
US2353163A
Cited
GB570429A
Cited
GB614330A
Cited
CH268562A
Cited
US2550936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |