US2869479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion of vehicles
Assignee: Individual
•
Filing: 1954-05-12
•
Granted: 1959-01-20
•
Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Hutchinson Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:05
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/20; B; B61; B61B; B61B13/00; B61B13/08; B61B13/12; B61B13/122; B61C; B61C11/00; B61C11/06
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |