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US2584872A
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Dual engine manifold pressure balancing device
Assignee: Individual
•
Filing: 1946-07-18
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Granted: 1952-02-05
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Expires: 1966-07-18
Abstract
No abstract record available.
Inventors
- 👤 Charlie B Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:01
CPC Classifications
F; F02; F02D; F02D25/00; F02D25/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731389A
Cited
US1867649A
Cited
US1784671A
Cited
US2062824A
Cited
US2381429A
Cited
US2452064A
Cited
US2545458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |