Patent US2714857A successfully refreshed from Google Patents.
US2714857A
Expired / Lapsed
US
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Gear pump
Assignee: Geo D Roper Corp
•
Filing: 1951-09-04
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Granted: 1955-08-09
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Expires: 1971-09-04
Abstract
No abstract record available.
Inventors
- 👤 John R Albright
- 👤 Swan E Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:57
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US621280A
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US1319776A
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US983605A
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US1317370A
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US1531607A
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US1673259A
Cited
US2382042A
Cited
US2406965A
Cited
US2412588A
Cited
US2533320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |