US2648254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logarithmic exposure meter
Assignee: General Electric Co
•
Filing: 1947-09-30
•
Granted: 1953-08-11
•
Expires: 1967-09-30
Abstract
No abstract record available.
Inventors
- 👤 Allen G Stimson
- 👤 Brynes Kermit
- 👤 Frederic B Jennings
- 👤 Clement F Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:44
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |