Patent US2390532A successfully refreshed from Google Patents.
US2390532A
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Magnetic erection device for gyroscopes
Assignee: SPERRY GYROSEOPE Co Inc
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Filing: 1942-10-28
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Granted: 1945-12-11
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Expires: 1962-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Haskins
- 👤 Orland E Esval
- 👤 Jr Robert S Curry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:47
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1214; Y10T74/1229; Y10T74/1232; Y10T74/125
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) | 1948-12-10 | 1949-06-11 | 1949-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-10 | 1953-06-11 | 1953-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-10 | 1957-06-11 | 1957-12-11 | $7700.00 | Window Closed / Lapsed |