US2988997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pump
Assignee: Babcock and Wilcox Co
•
Filing: 1955-03-22
•
Granted: 1961-06-20
•
Expires: 1975-03-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold G Elrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:14
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733604A
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GB126947A
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US2434705A
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US2612109A
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US2686474A
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US2807212A
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US2787219A
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US2948118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |