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Patent US2864317A successfully refreshed from Google Patents.
US2864317A
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US
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Pumping device
Assignee: Individual
•
Filing: 1953-10-05
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Granted: 1958-12-16
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Expires: 1973-10-05
Abstract
No abstract record available.
Inventors
- 👤 Purnell A Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:04
CPC Classifications
F; F04; F04F; F04F1/00; F04F1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US536858A
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US559810A
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US753045A
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US827341A
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US899921A
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US960023A
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US1102152A
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US1537264A
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US1628943A
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US2461032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |