US2752793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopic apparatus
Assignee: Research Corp
•
Filing: 1951-03-22
•
Granted: 1956-07-03
•
Expires: 1971-03-22
Abstract
No abstract record available.
Inventors
- 👤 Charles S Draper
- 👤 Roger B Woodbury
- 👤 John F Hutzenlaub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:29
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; G01C21/166; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2584125A
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US1501886A
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US1947562A
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US1930082A
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US1940387A
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US2382727A
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US2291612A
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US2513738A
Cited
US2592417A
Cited
US2488734A
Cited
US2631455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |