US2508973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energizing and timing circuits for electromagnetic devices
Assignee: Taylor Winfield Corp
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Filing: 1944-06-16
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Granted: 1950-05-23
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Expires: 1964-06-16
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:37
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18; H03; H03K; H03K17/00; H03K17/28; H03K17/288
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |