US2966569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum switch
Assignee: Jennings Radio Manufacturing Corp
•
Filing: 1957-04-29
•
Granted: 1960-12-27
•
Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Jennings Jo Emmett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:10
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE563140C
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GB314352A
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US1892538A
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DE636086C
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DE615965C
Cited
US2261020A
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US2740867A
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US2740869A
Cited
GB787846A
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US2740915A
Cited
US2773154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |