Patent US3431471A successfully refreshed from Google Patents.
US3431471A
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Static time delay relay
Assignee: ABB Norden Holding AB
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Filing: 1966-11-04
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Granted: 1969-03-04
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Expires: 1986-11-04
Abstract
No abstract record available.
Inventors
- 👤 Stig Aviander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:36
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H01; H01H; H01H47/00; H01H47/02; H01H47/18; H03K5/00; H03K5/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2906926A
Cited
US3046470A
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US2927259A
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US3158790A
Cited
US3207926A
Cited
US3286135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |