Patent US2825414A successfully refreshed from Google Patents.
US2825414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impeller blade assembly
Assignee: Individual
•
Filing: 1956-12-28
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Granted: 1958-03-04
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:27
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0042; B23Q11/005; F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/38; F04D29/384; Y; Y10; Y10S; Y10S29/00; Y10S29/083
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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |