Patent US2737855A successfully refreshed from Google Patents.
US2737855A
Expired / Lapsed
US
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Portable gear tooth finishing machine
Assignee: De Laval Steam Turbine Co
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Filing: 1951-10-18
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Granted: 1956-03-13
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Expires: 1971-10-18
Abstract
No abstract record available.
Inventors
- 👤 Philip J Wenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:19
CPC Classifications
B; B23; B23F; B23F19/00; B23F23/00; B23F23/12; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/107791; Y10T409/108109; Y10T409/108745
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) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |