Patent US2747338A successfully refreshed from Google Patents.
US2747338A
Expired / Lapsed
US
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Machines for lapping and grinding
Assignee: Newall Engineering Co Ltd
•
Filing: 1953-02-02
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Granted: 1956-05-29
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Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 Hoare Stanley William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:36
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2209711A
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US2374928A
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US2387044A
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US2664711A
Cited
US2690034A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |