Patent US5170328A successfully refreshed from Google Patents.
US2390627A
Expired / Lapsed
US
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Taper cutting attachment for lathes
Assignee: Individual
•
Filing: 1944-09-05
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Granted: 1945-12-11
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Expires: 1964-09-05
Abstract
No abstract record available.
Inventors
- 👤 Dean O Truba
- 👤 Elmer T Liller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:47
CPC Classifications
B; B23; B23B; B23B23/00; B23B23/02; B23B23/025; B23B2233/00; B23B2233/08; B23B2260/00; B23B2260/088; Y; Y10; Y10T; Y10T82/00; Y10T82/15; Y10T82/152; Y10T82/25; Y10T82/2568; Y10T82/2571
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) | 1948-12-10 | 1949-06-11 | 1949-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-10 | 1953-06-11 | 1953-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-10 | 1957-06-11 | 1957-12-11 | $7700.00 | Window Closed / Lapsed |