US2417246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism
Assignee: Joy Manufacturing Co
•
Filing: 1942-12-18
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Granted: 1947-03-11
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Expires: 1962-12-18
Abstract
No abstract record available.
Inventors
- 👤 Alexander D Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:47
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/16; F16K15/1402; F16K15/162; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7879; Y10T137/7888; Y10T137/7891; Y10T137/7892
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US797739A
Cited
US1998444A
Cited
US2065062A
Cited
US2199482A
Cited
US2040542A
Cited
US2095842A
Cited
US2151746A
Cited
US2302447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-10 | 1950-09-09 | 1951-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-10 | 1954-09-09 | 1955-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-10 | 1958-09-09 | 1959-03-11 | $7700.00 | Window Closed / Lapsed |