Patent US3452731A successfully refreshed from Google Patents.
US3452731A
Expired / Lapsed
US
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Ignition control circuit and power supply therefor
Assignee: Mar Lin Safety Devices Inc
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Filing: 1967-10-16
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Granted: 1969-07-01
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Expires: 1987-10-16
Abstract
No abstract record available.
Inventors
- 👤 Harry W Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:28
CPC Classifications
F; F02; F02P; F02P15/00; F02P15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2883560A
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US3047728A
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US3026863A
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US3018413A
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US3059148A
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US3175123A
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US3184640A
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US3170451A
Cited
US3280809A
Cited
US3241538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |