US2474693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field responsive device
Assignee: Individual
•
Filing: 1945-01-31
•
Granted: 1949-06-28
•
Expires: 1965-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert G Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:56
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/02; G01C17/28; G01C17/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1962154A
Cited
US2030101A
Cited
US2105479A
Cited
US2114889A
Cited
US2269584A
Cited
US2334593A
Cited
US2370194A
Cited
US2331617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |