Patent US2424802A successfully refreshed from Google Patents.
US2424802A
Expired / Lapsed
US
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Rubber valve stem
Assignee: Dill Manufacturing Co
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Filing: 1942-02-28
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Granted: 1947-07-29
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Expires: 1962-02-28
Abstract
No abstract record available.
Inventors
- 👤 John C Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:36
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/4941
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1792619A
Cited
US2126770A
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US2262169A
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US2232530A
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US2188713A
Cited
US2260646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |