Patent US2754637A successfully refreshed from Google Patents.
US2754637A
Expired / Lapsed
US
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Shrouded turbine blade airfoil grinder
Assignee: Curtiss Wright Corp
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Filing: 1954-07-01
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Granted: 1956-07-17
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Expires: 1974-07-01
Abstract
No abstract record available.
Inventors
- 👤 Michael W Schiavone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:39
CPC Classifications
B; B24; B24B; B24B17/00; B24B17/08; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/302968; Y10T409/303248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1155432A
Cited
US1283142A
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US1651432A
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US2380286A
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US2479622A
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US2606406A
Cited
US2656651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |