US2906841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-phase vacuum switch
Assignee: Jennings Radio Manufacturing Corp
•
Filing: 1956-01-03
•
Granted: 1959-09-29
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jennings Jo Emmett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:55
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/02; H01H33/022; H01H2033/024; H01H33/666; H01H2033/6668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1814851A
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US1784303A
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US1972362A
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US1935228A
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USRE21087E
Cited
DE703177C
Cited
US2181586A
Cited
FR869788A
Cited
US2443545A
Cited
US2557928A
Cited
US2740867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |