US2881798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supply maintenance device for engines
Assignee: Individual
•
Filing: 1956-09-28
•
Granted: 1959-04-14
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 William E Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:39
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/16; F01; F01L; F01L1/00; F02M25/00; F01L2710/00; F01L2710/006; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/85986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1305416A
Cited
US2308656A
Cited
US1276890A
Cited
US1517665A
Cited
US2001164A
Cited
US2366830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |