Patent US2709449A successfully refreshed from Google Patents.
US2709449A
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US
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Control mechanism for variable delivery positive displacement pump
Assignee: General Electric Co
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Filing: 1946-12-26
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Granted: 1955-05-31
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Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 Donald E Garr
- 👤 Martin A Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:35
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/26; F04B1/28; F04B1/29; F04B1/295; F04B49/00; F04B49/002; F04B49/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1418952A
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US1775613A
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US2265314A
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US2299234A
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US2229715A
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US2346254A
Cited
US2440663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |