Patent US2519459A successfully refreshed from Google Patents.
US2519459A
Expired / Lapsed
US
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Stable element gyro
Assignee: Westinghouse Electric Corp
•
Filing: 1946-08-27
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Granted: 1950-08-22
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Expires: 1966-08-27
Abstract
No abstract record available.
Inventors
- 👤 Clinton R Hanna
- 👤 Lawrence B Lynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:51
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1232; Y10T74/125; Y10T74/1257
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1141099A
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US2133809A
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US2133793A
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US2158048A
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US2411087A
Cited
US2190698A
Cited
US2293092A
Cited
US2328744A
Cited
US2417081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |