US3378759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer voltage regulating system
Assignee: Westinghouse Electric Corp
•
Filing: 1965-06-29
•
Granted: 1968-04-16
•
Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Eaves
- 👤 Rodney L Peckham
- 👤 Ralph A Prunty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:37
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/24; G05F1/26; G05F1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2071984A
Cited
US2180164A
Cited
US2180193A
Cited
US3182228A
Cited
US3239723A
Cited
US3296498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |