US2619103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed and aneroid controlled pilot operated valve
Assignee: Parker Appliance Co
•
Filing: 1947-01-31
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Granted: 1952-11-25
•
Expires: 1967-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert H Davies
- 👤 Emmett C Hartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:20
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/34; G05D13/36; G05D13/38; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1044; Y10T137/108; Y10T137/1842; Y10T137/1939; Y10T137/2012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822887A
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US974266A
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US996346A
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US1154591A
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FR720860A
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FR762114A
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US2223115A
Cited
US2324579A
Cited
US2484848A
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US2426900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |