Patent US2441825A successfully refreshed from Google Patents.
US2441825A
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Rotary indicator employing lightconducting elements
Assignee: RCA Corp
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Filing: 1944-10-31
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Granted: 1948-05-18
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Expires: 1964-10-31
Abstract
No abstract record available.
Inventors
- 👤 Albert E Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:45
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB304692A
Cited
US2124089A
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US2071284A
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US2286737A
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US2333492A
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US2286014A
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US2287605A
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US2385254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |