Patent US2509577A successfully refreshed from Google Patents.
Patent US3012709A successfully refreshed from Google Patents.
US3012709A
Expired / Lapsed
US
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Blade for axial compressors
Assignee: Daimler Benz AG
•
Filing: 1956-05-14
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Granted: 1961-12-12
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Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 Erwin B G Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:43
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/321; F04D29/324; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/141; F04D29/66; F04D29/68; F04D29/681
Claims Analysis
Total Claims: 0
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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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |