US2866839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition systems for internal combustion engines
Assignee: —
•
Filing: —
•
Granted: 1958-12-30
•
Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:37
CPC Classifications
F; F02; F02P; F02P15/00; F02P15/10; F02P15/02; F02P15/08; F02P3/00; F02P9/00; F02P9/002; F02P9/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |