Patent US20040243162A1 successfully refreshed from Google Patents.
US2193088A
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Poppet valve blank and method of making same
Assignee: Eaton Corp
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Filing: 1938-02-12
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Granted: 1940-03-12
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Expires: 1958-02-12
Abstract
No abstract record available.
Inventors
- 👤 Charlton George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:13
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) | 1943-03-12 | 1943-09-11 | 1944-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-12 | 1947-09-11 | 1948-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-12 | 1951-09-11 | 1952-03-12 | $7700.00 | Window Closed / Lapsed |