US2947918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic interrupter circuit
Assignee: Consolidated Vacuum Corp
•
Filing: 1956-08-06
•
Granted: 1960-08-02
•
Expires: 1976-08-06
Abstract
No abstract record available.
Inventors
- 👤 Allen R Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:10
CPC Classifications
H; H01; H01H; H01H47/00; G; G05; G05B; G05B11/00; G05B11/01; G05B11/012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE566048C
Cited
US2254039A
Cited
US2272914A
Cited
US2208125A
Cited
US2473683A
Cited
US2530749A
Cited
US2576371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |