US1470607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impeller for centrifugal pumps
Assignee: UNCHOKEABLE PUMP Ltd
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Filing: 1922-11-03
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Granted: 1923-10-16
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Expires: 1942-11-03
Abstract
No abstract record available.
Inventors
- 👤 Hazell John Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:33
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2238; F04D29/225
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) | 1926-10-15 | 1927-04-16 | 1927-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-15 | 1931-04-16 | 1931-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-15 | 1935-04-16 | 1935-10-16 | $7700.00 | Window Closed / Lapsed |