Patent US2446888A successfully refreshed from Google Patents.
US2446888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition system
Assignee: —
•
Filing: —
•
Granted: 1948-08-10
•
Expires: 1965-08-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:24
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/40; F; F02; F02P; F02P3/00; F02P3/02; F02P3/04; F02P3/0407; F02P3/0421
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |