US754984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable blade for steam-turbines.
Assignee: Individual
•
Filing: 1903-04-01
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Granted: 1904-03-22
•
Expires: 1923-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ernst Elis Fridolf Fagerstroem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:39
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/32; F01D5/323; F01D5/3007; F05; F05D; F05D2220/00; F05D2220/30; F05D2220/31; F05D2230/00; F05D2230/50; F05D2230/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1907-03-22 | 1907-09-21 | 1908-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-03-22 | 1911-09-21 | 1912-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-03-22 | 1915-09-21 | 1916-03-22 | $7700.00 | Window Closed / Lapsed |