US2482281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure meter having adjustable interconnected photocell shutter and pointer biasing means
Assignee: Triplett Electrical Instrument Co
•
Filing: 1947-10-11
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Granted: 1949-09-20
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Expires: 1967-10-11
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Lingel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:57
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)
US2194031A
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FR801847A
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FR827027A
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US2242043A
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US2305294A
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US2274441A
Cited
US2329630A
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US2346483A
Cited
US2381329A
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US2433648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |