US2531847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reserve fuel supply
Assignee: Individual
•
Filing: 1948-06-14
•
Granted: 1950-11-28
•
Expires: 1968-06-14
Abstract
No abstract record available.
Inventors
- 👤 Douglas C Haley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:28
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/9247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US948279A
Cited
US1361614A
Cited
US1990605A
Cited
US2103448A
Cited
FR880067A
Cited
US2361148A
Cited
US2394431A
Cited
US2394506A
Cited
US2476203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |