US2721677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-motor-driven pumps
Assignee: Individual
•
Filing: 1951-10-02
•
Granted: 1955-10-25
•
Expires: 1971-10-02
Abstract
No abstract record available.
Inventors
- 👤 Meredew George Charles
- 👤 Stevens George Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:55
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/605; F04D29/606; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F02M37/10; F02M37/103; F04D13/00; F04D13/02; F04D13/06; F02M2037/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1870192A
Cited
US1800333A
Cited
US1960389A
Cited
US1930293A
Cited
US2370590A
Cited
US2368529A
Cited
US2413546A
Cited
US2500834A
Cited
US2530357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |