Patent US2183254A successfully refreshed from Google Patents.
US2183254A
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Valve structure and method of forming
Assignee: Eaton Corp
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Filing: 1937-06-28
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Granted: 1939-12-12
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Expires: 1957-06-28
Abstract
No abstract record available.
Inventors
- 👤 Charlton George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:42
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/001; B23P15/002; F; F01; F01L; F01L3/00; F01L3/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49307; Y10T29/49313; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12271; Y10T428/12292; Y10T428/12382; Y10T428/12451; Y10T428/12493; Y10T428/12986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-12-11 | 1943-06-12 | 1943-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-11 | 1947-06-12 | 1947-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-11 | 1951-06-12 | 1951-12-12 | $7700.00 | Window Closed / Lapsed |