Patent US2046474A successfully refreshed from Google Patents.
US2046474A
Expired / Lapsed
US
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Vented fluid controlling valve
Assignee: Individual
•
Filing: 1934-11-02
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Granted: 1936-07-07
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Expires: 1954-11-02
Abstract
No abstract record available.
Inventors
- 👤 Maggenti Alberto Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:19
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/86324; Y10T137/86332; Y10T137/86493; Y10T137/86558; Y10T137/86928; Y10T137/87153; Y10T137/87161; Y10T137/87917; Y10T137/87981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-07-07 | 1940-01-06 | 1940-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-07 | 1944-01-06 | 1944-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-07 | 1948-01-06 | 1948-07-07 | $7700.00 | Window Closed / Lapsed |