Patent US2424193A successfully refreshed from Google Patents.
US2424193A
Expired / Lapsed
US
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Self-steering device
Assignee: Individual
•
Filing: 1940-07-31
•
Granted: 1947-07-15
•
Expires: 1960-07-31
Abstract
No abstract record available.
Inventors
- 👤 Rost Helge Fabian
- 👤 Thunell Karl Harry
- 👤 Vigren Sten Daniel
- 👤 Claesson Per Harry Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:08
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/226; F41G7/2273; F41G7/2286; F41G7/2293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1387850A
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US1388932A
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US1384868A
Cited
US1892431A
Cited
GB352035A
Cited
US1958893A
Cited
US2003661A
Cited
GB441866A
Cited
US2109475A
Cited
US2176469A
Cited
US2165800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |