US2592133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for synchronizing a voltage train generator and power supply
Assignee: Sperry Products Inc
•
Filing: 1945-06-28
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Granted: 1952-04-08
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Expires: 1965-06-28
Abstract
No abstract record available.
Inventors
- 👤 Floyd A Firestone
- 👤 Jr Ralph B De Lano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:40
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/55; H03K3/37; H03K3/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2394891A
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US2394389A
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US2391894A
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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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |