US2496635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction and control
Assignee: Individual
•
Filing: 1944-02-09
•
Granted: 1950-02-07
•
Expires: 1964-02-09
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Ocheltree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20; F16K1/2007; F16K1/2021; F16K1/2028; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US151580A
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US288331A
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US341827A
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US476550A
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US616100A
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US931228A
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US916114A
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US1280713A
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US1381511A
Cited
GB342192A
Cited
US1989942A
Cited
GB455795A
Cited
US2274776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |