Patent US2807212A successfully refreshed from Google Patents.
US2807212A
Expired / Lapsed
US
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Electromagnetic induction pump
Assignee: RCA Corp
•
Filing: 1952-12-12
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Granted: 1957-09-24
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Expires: 1972-12-12
Abstract
No abstract record available.
Inventors
- 👤 Nils E Lindenblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:44
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1298664A
Cited
US1792449A
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DE511137C
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US2397785A
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US2386369A
Cited
CH239816A
Cited
US2539800A
Cited
US2558698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |