Patent US5562896A successfully refreshed from Google Patents.
Patent US2784649A successfully refreshed from Google Patents.
US2784649A
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Machine tool for the production of blades of centrifugal machines
Assignee: Georg Fischer AG
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Filing: 1953-11-16
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Granted: 1957-03-12
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Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 Zelewsky Ottomar Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:18
CPC Classifications
B; B24; B24B; B24B17/00; B24B17/02; B24B17/025; B23; B23C; B23C3/00; B23C3/16; B23C3/18; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/302688; Y10T409/302744; Y10T409/302968; Y10T409/303024; Y10T409/30308; Y10T82/00; Y10T82/13; Y10T82/135
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) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |