US2486495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet device for boat propulsion employing air and steam slugs
Assignee: Individual
•
Filing: 1946-01-26
•
Granted: 1949-11-01
•
Expires: 1966-01-26
Abstract
No abstract record available.
Inventors
- 👤 Rider Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:41
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/12; B63H21/00; B63H21/02; B63H21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US13394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |