US3499388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump
Assignee: Hale Fire Pump Co
•
Filing: 1967-06-13
•
Granted: 1970-03-10
•
Expires: 1987-06-13
Abstract
No abstract record available.
Inventors
- 👤 Harry A Eberhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:36
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0027; F04D7/00; F04D7/02; F04D7/04; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D29/40; F04D29/42; F04D29/426; F04D29/428; F04D29/44; F04D29/445; F04D29/60; F04D29/62; F04D29/622; F04D29/628; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F05; F05D; F05D2230/00; F05D2230/60; F05D2230/64; F05D2230/644
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1925898A
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US2190670A
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US2648986A
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FR1138598A
Cited
GB848810A
Cited
GB860456A
Cited
US3079605A
Cited
US3229641A
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US3213798A
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US3279386A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |