US2483949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Periodic rotary metering and distributing valve
Assignee: Individual
•
Filing: 1943-10-06
•
Granted: 1949-10-04
•
Expires: 1963-10-06
Abstract
No abstract record available.
Inventors
- 👤 Robert W Washington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:31
CPC Classifications
F; F02; F02M; F02M41/00; F02M41/16; F02D; F02D3/00; F02D3/02; F02M69/00; F02M69/46; F02M69/50; F02M2700/00; F02M2700/05; F02M2700/055; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191315962A
Cited
US1143409A
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US1736647A
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US2027360A
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US1968390A
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US1868324A
Cited
US2025362A
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US2024690A
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US2331580A
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US2273019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |