US3472981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive protective means for vacuum type circuit interrupters immersed in liquid
Assignee: General Electric Co
•
Filing: 1966-08-05
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Granted: 1969-10-14
•
Expires: 1986-08-05
Abstract
No abstract record available.
Inventors
- 👤 Orin P Mccarty
- 👤 Francis S Urbanek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:30
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/0005; H01H9/0038; H01F; H01F29/00; H01F29/02; H01F29/025; H01F29/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2472625A
Cited
GB834140A
Cited
US3038980A
Cited
US3244843A
Cited
US3206569A
Cited
US3404247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |