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Patent US3534222A successfully refreshed from Google Patents.
US3534222A
Expired / Lapsed
US
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Electronic timer circuit for delayed application of discharge potential
Assignee: Collins Radio Co
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Filing: 1968-11-04
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Granted: 1970-10-13
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Expires: 1988-11-04
Abstract
No abstract record available.
Inventors
- 👤 Berton D Epler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:43
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/51; H03K17/56; H03K17/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3168637A
Cited
US3287608A
Cited
US3408539A
Cited
US3392309A
Cited
US3382417A
Cited
US3412267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |