US2857892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine engine with ballast tanks
Assignee: Outboard Marine Corp
•
Filing: 1957-05-17
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Granted: 1958-10-28
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Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 Richard P Hulsebus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:53
CPC Classifications
F; F02; F02B; F02B61/00; F02B61/04; F02B61/045; F02B75/00; F02B75/16; F02B75/18; F02B75/20; F02B75/02; F02B2075/022; F02B2075/025; F02B2075/1804; F02B2075/1808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |