US2659310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pumping device for pumping fluids
Assignee: Individual
•
Filing: 1950-09-02
•
Granted: 1953-11-17
•
Expires: 1970-09-02
Abstract
No abstract record available.
Inventors
- 👤 Ryba Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:35
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/12; F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0054; F04B43/02; F04B43/023; F04B43/028; F04B43/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1380442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |