Patent US2939448A successfully refreshed from Google Patents.
US2939448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric starter attachment for internal combustion engines
Assignee: Outboard Marine Corp
•
Filing: 1957-04-04
•
Granted: 1960-06-07
•
Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 Einar T Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:41
CPC Classifications
F; F02; F02N; F02N11/00; F02N15/00; F02N15/006; F02N15/02; F02N15/022; F02N3/00; F02N3/02; F02N5/00; F02N5/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1006064A
Cited
US1288087A
Cited
US1288086A
Cited
US1288088A
Cited
US1727086A
Cited
US2404419A
Cited
US2530623A
Cited
US2693718A
Cited
US2731005A
Cited
US2759372A
Cited
US2835241A
Cited
US2838938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |