US2639671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-priming centrifugal pump unit for liquid dispensing apparatus
Assignee: Gulf Oil Corp
•
Filing: 1949-10-11
•
Granted: 1953-05-26
•
Expires: 1969-10-11
Abstract
No abstract record available.
Inventors
- 👤 Wagner Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE481195C
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US1581294A
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US1760313A
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DE527764C
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US2214799A
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US2162247A
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US2246951A
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US2244397A
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US2240128A
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US2248174A
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US2306841A
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US2387505A
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US2477079A
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US2451030A
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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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |