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Patent US2471171A successfully refreshed from Google Patents.
US2471171A
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Vest pocket exposure meter having overlapping sensitivity ranges and calculator rings surrounding the meter scale
Assignee: General Electric Co
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Filing: 1946-10-19
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Granted: 1949-05-24
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Expires: 1966-10-19
Abstract
No abstract record available.
Inventors
- 👤 Allen G Stimson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:14
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209; G01J1/4214
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1447097A
Cited
US2092826A
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US2070664A
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US2147999A
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US2048655A
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US2117734A
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US2151901A
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US2274441A
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US2293576A
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US2329630A
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US2346529A
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US2408944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |