Patent US2475457A successfully refreshed from Google Patents.
US2879716A
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US
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Control means for motor driven pumps
Assignee: Rolls Royce PLC
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Filing: 1954-04-12
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Granted: 1959-03-31
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Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 Meredew George Charles
- 👤 Moore Allan George Edward
- 👤 Smedley Frederick Edwar Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:00
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0066; F04D13/00; F04D13/02; F04D13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US385941A
Cited
US429570A
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US1284662A
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DE372196C
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US2126863A
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US2250865A
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US2294975A
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US2765619A
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US2694979A
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US2778312A
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US2752858A
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US2634681A
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US2765804A
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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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |