US3488575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferromagnetic ball magnetizer and remanence detector
Assignee: CLIFFORD L SEALE
•
Filing: 1967-06-23
•
Granted: 1970-01-06
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Expires: 1987-06-23
Abstract
No abstract record available.
Inventors
- 👤 Hoy O Mcintire
- 👤 Harvey H Hunter
- 👤 Clifford L Seale
- 👤 John H Flora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/12; G01R33/14; G01N; G01N27/00; G01N27/72; G01N27/80; H; H01; H01F; H01F13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
SU155541A1
Cited
US2295382A
Cited
US2942177A
Cited
GB866570A
Cited
US3016487A
Cited
US3281666A
Cited
GB936015A
Cited
FR1403958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |