US2677327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump construction
Assignee: AY McDonald Manufacturing Co
•
Filing: 1949-02-24
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Granted: 1954-05-04
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Expires: 1969-02-24
Abstract
No abstract record available.
Inventors
- 👤 Martin B Macneille
- 👤 Walter A Kabele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/04; F04D9/06; F05; F05B; F05B2250/00; F05B2250/10; F05B2250/12; F05B2250/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2244397A
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US2292529A
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US2313585A
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US2335109A
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GB556853A
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US2475118A
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US2484105A
Cited
US2403556A
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US2440912A
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US2478941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |