Patent US2752793A successfully refreshed from Google Patents.
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 22:01
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2584125A
Cited
US1501886A
Cited
US1947562A
Cited
US1930082A
Cited
US1940387A
Cited
US2382727A
Cited
US2291612A
Cited
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 |