Patent US1580486A successfully refreshed from Google Patents.
US1580486A
Expired / Lapsed
US
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Guiding arrangement for the propeller current of ships
Assignee: Individual
•
Filing: 1923-10-03
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Granted: 1926-04-13
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Expires: 1943-10-03
Abstract
No abstract record available.
Inventors
- 👤 Hass Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:45
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/16; B63B; B63B11/00; B63B11/06; B63H5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-04-12 | 1929-10-12 | 1930-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-04-12 | 1933-10-12 | 1934-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-04-12 | 1937-10-12 | 1938-04-13 | $7700.00 | Window Closed / Lapsed |