Patent US2206394A successfully refreshed from Google Patents.
US2929326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid metal pumps
Assignee: Individual
•
Filing: 1955-06-28
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Granted: 1960-03-22
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Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Ward A Ingels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1298664A
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FR558624A
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GB345574A
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CH239816A
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FR973645A
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US2658452A
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US2651258A
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US2702004A
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US2770196A
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US2716943A
Cited
US2786416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |