US3040247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field detector
Assignee: Individual
•
Filing: 1958-01-21
•
Granted: 1962-06-19
•
Expires: 1978-01-21
Abstract
No abstract record available.
Inventors
- 👤 Roland L Van Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:03
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01R33/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2047609A
Cited
DE925191C
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GB579439A
Cited
US2528703A
Cited
US2480265A
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US2854580A
Cited
US2912653A
Cited
US2991414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |