Patent US2493779A successfully refreshed from Google Patents.
US2493779A
Expired / Lapsed
US
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Magnetometer
Assignee: Individual
•
Filing: 1945-02-05
•
Granted: 1950-01-10
•
Expires: 1965-02-05
Abstract
No abstract record available.
Inventors
- 👤 Jacob H Rubenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:00
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/038
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US508827A
Cited
GB276652A
Cited
US1863415A
Cited
US1863421A
Cited
US1976531A
Cited
US2053154A
Cited
US2123045A
Cited
US2275868A
Cited
US2388848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |