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US2830564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary valve
Assignee: Individual
•
Filing: 1954-04-27
•
Granted: 1958-04-15
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Expires: 1974-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jasper L Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:34
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/46; F02M69/50; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F02M2700/00; F02M2700/05; F02M2700/055; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86501
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US963470A
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US1046427A
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US1458644A
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US2023349A
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US2052472A
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US2067346A
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US2594173A
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US2533931A
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US2516388A
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US2545834A
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US2747593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |