Patent US2584440A successfully refreshed from Google Patents.
US2584440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure meter
Assignee: Individual
•
Filing: 1946-05-09
•
Granted: 1952-02-05
•
Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Marlin E Fogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:21
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2045797A
Cited
US2156734A
Cited
GB487065A
Cited
US2213642A
Cited
US2278338A
Cited
US2178197A
Cited
US2274441A
Cited
US2292623A
Cited
US2247805A
Cited
US2389617A
Cited
US2437774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |