US2991458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition interference alarm
Assignee: Cooke Engineering Co
•
Filing: 1956-07-27
•
Granted: 1961-07-04
•
Expires: 1976-07-27
Abstract
No abstract record available.
Inventors
- 👤 Nelson M Cooke
- 👤 Frederick E Barline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
H; H04; H04B; H04B15/00; H04B15/02; H04B15/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2450166A
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US2645771A
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US2472774A
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US2499410A
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US2492182A
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US2588879A
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US2652551A
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US2794974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |