Patent US2743555A successfully refreshed from Google Patents.
US2743555A
Expired / Lapsed
US
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Centerless grinding attachment for lathes
Assignee: Individual
•
Filing: 1954-05-04
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Granted: 1956-05-01
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Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Irvine Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:37
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/18; B24B5/307
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1483748A
Cited
US1440639A
Cited
US1722386A
Cited
US1575557A
Cited
US1985433A
Cited
US2466478A
Cited
US2568825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |