US2847941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow pumps
Assignee: Individual
•
Filing: 1953-11-02
•
Granted: 1958-08-19
•
Expires: 1973-11-02
Abstract
No abstract record available.
Inventors
- 👤 William M Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:25
CPC Classifications
F; F04; F04D; F04D3/00; F04D3/005; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1502862A
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US1683949A
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US1762708A
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GB323658A
Cited
US2013078A
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US2030560A
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US2382535A
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US2494772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |