US2445069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel flow control device
Assignee: Individual
•
Filing: 1944-10-20
•
Granted: 1948-07-13
•
Expires: 1964-10-20
Abstract
No abstract record available.
Inventors
- 👤 Roy W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:48
CPC Classifications
F; F23; F23D; F23D5/00; F23D5/12; F23D5/14; F24; F24C; F24C5/00; F24C5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US976917A
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US783159A
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US1244667A
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US1352123A
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US1380442A
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US1546558A
Cited
US1653885A
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US1675079A
Cited
US1916433A
Cited
US1868444A
Cited
US1914541A
Cited
US2146398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |