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Patent US2499131A successfully refreshed from Google Patents.
US2499131A
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Live center for lathes, etc.
Assignee: ELMER G DAVIS
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Filing: 1945-12-28
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Granted: 1950-02-28
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Expires: 1965-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harold J Coles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:25
CPC Classifications
B; B23; B23B; B23B23/00; B23B23/04; F; F16; F16C; F16C19/00; F16C19/54; F16C19/541; F16C19/542; B23B2260/00; B23B2260/008; B23B2260/0082; B23B2260/136; F16C21/00; F16C2322/00; F16C2322/39; F16C27/00; F16C27/08; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2568
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |