US3040212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected transformer
Assignee: General Electric Co
•
Filing: 1957-09-26
•
Granted: 1962-06-19
•
Expires: 1977-09-26
Abstract
No abstract record available.
Inventors
- 👤 Gerald P Hermann
- 👤 Edward D Treanor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:49
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/04; H02H7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325889A
Cited
US1750771A
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US1960068A
Cited
US1844403A
Cited
US2066935A
Cited
US1988683A
Cited
GB482155A
Cited
US2182637A
Cited
US2236981A
Cited
US2491338A
Cited
US2921241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |