US2642479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for detecting or measuring magnetic fields
Assignee: Sunoco Inc
•
Filing: 1948-01-05
•
Granted: 1953-06-16
•
Expires: 1968-01-05
Abstract
No abstract record available.
Inventors
- 👤 Jones Jack Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:13
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01V; G01V3/00; G01V3/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2241499A
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US2315045A
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US2390051A
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US2407202A
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US2406870A
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US2412046A
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US2505701A
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US2480575A
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US2459849A
Cited
US2511564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |