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US2834847A
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Vacuum relay
Assignee: Jennings Radio Manufacturing Corp
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Filing: 1955-05-13
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Granted: 1958-05-13
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Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jennings Jo Emmett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:31
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1783279A
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US1941273A
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US2066894A
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US2193731A
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US2285467A
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US2282066A
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US2323702A
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US2614188A
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US2577602A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |