US2581478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline economizer valve
Assignee: Individual
•
Filing: 1944-07-21
•
Granted: 1952-01-08
•
Expires: 1964-07-21
Abstract
No abstract record available.
Inventors
- 👤 Gaddoni Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:24
CPC Classifications
F; F02; F02M; F02M21/00; F02M2700/00; F02M2700/13; F02M2700/1305; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7749; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/794
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1256976A
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US1220872A
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US1271541A
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US1302844A
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US1519858A
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US1604221A
Cited
US1613076A
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US2107832A
Cited
FR834708A
Cited
US2232784A
Cited
US2364990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |