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US2566525A
Expired / Lapsed
US
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Screw propeller and nozzle ship propulsion assembly
Assignee: Individual
•
Filing: 1949-11-03
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Granted: 1951-09-04
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Expires: 1969-11-03
Abstract
No abstract record available.
Inventors
- 👤 Kort Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:40
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/14; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2030375A
Cited
US2041793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |