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US2659074A
Expired / Lapsed
US
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Double-acting solenoid for chime signals
Assignee: Nutone Inc
•
Filing: 1950-12-06
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Granted: 1953-11-10
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Expires: 1970-12-06
Abstract
No abstract record available.
Inventors
- 👤 Lowell M Alexander
- 👤 Elmer H Bladh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:41
CPC Classifications
G; G10; G10K; G10K1/00; G10K1/06; G10K1/062; G10K1/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US400809A
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US798290A
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US1460785A
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US2132297A
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US2194507A
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US2223678A
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US2470827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |