US2539772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position stabilizing device
Assignee: Raytheon Co
•
Filing: 1945-10-20
•
Granted: 1951-01-30
•
Expires: 1965-10-20
Abstract
No abstract record available.
Inventors
- 👤 John W Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:27
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221; Y10T74/1261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324477A
Cited
GB190924112A
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US1066860A
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US1050153A
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US1186856A
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US1429588A
Cited
US1545812A
Cited
US1645079A
Cited
US1735058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |