US2574602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine suspension
Assignee: DEV CORP Inc
•
Filing: 1946-10-25
•
Granted: 1951-11-13
•
Expires: 1966-10-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Stevens Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:03
CPC Classifications
B; B62; B62M; B62M7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190010503A
Cited
US675391A
Cited
GB141906A
Cited
FR556908A
Cited
GB424458A
Cited
GB487682A
Cited
US2091698A
Cited
US2401449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |