Patent US2559298A successfully refreshed from Google Patents.
US2559298A
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Automatic pilot with frictional precession and electric followup control
Assignee: Singer Co
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Filing: 1946-07-31
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Granted: 1951-07-03
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Expires: 1966-07-31
Abstract
No abstract record available.
Inventors
- 👤 Frank A Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:29
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0055; G05D1/0066; G01; G01C; G01C19/00; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB365189A
Cited
US1826013A
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US1825994A
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US1825345A
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US2005530A
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US2199256A
Cited
GB547208A
Cited
US2422267A
Cited
US2417689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |