US2759169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical selector system
Assignee: Individual
•
Filing: 1952-01-19
•
Granted: 1956-08-14
•
Expires: 1972-01-19
Abstract
No abstract record available.
Inventors
- 👤 Orville G Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:14
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/22; G11B17/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1116007A
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US1090816A
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US1787620A
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US1795341A
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US2181104A
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US2420065A
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US2456893A
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US2570930A
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US2551522A
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US2573076A
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US2621241A
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US2624795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |