US2792786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump and propulsion unit
Assignee: Individual
•
Filing: 1952-10-27
•
Granted: 1957-05-21
•
Expires: 1972-10-27
Abstract
No abstract record available.
Inventors
- 👤 Axel L Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:39
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/02; B63H11/04; B63H11/08; B63H20/00; B63H2011/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US141039A
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US21825A
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US1141556A
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US1197181A
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US1454180A
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US1528449A
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FR631037A
Cited
FR812914A
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US2233231A
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US2504140A
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US2610602A
Cited
US2684635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |