US2551979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coordinated speed and pressure control apparatus for combustion engines
Assignee: Honeywell Inc
•
Filing: 1946-04-03
•
Granted: 1951-05-08
•
Expires: 1966-04-03
Abstract
No abstract record available.
Inventors
- 👤 Hubert T Sparrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:24
CPC Classifications
F; F02; F02D; F02D23/00; B; B64; B64D; B64D27/00; B64D27/02; B64D27/16; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2493476A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |