US2418686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing of magnetic materials
Assignee: Magnetic Analysis Corp
•
Filing: 1944-01-13
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Granted: 1947-04-08
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Expires: 1964-01-13
Abstract
No abstract record available.
Inventors
- 👤 Zuschlag Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:10
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9046; Y; Y10; Y10S; Y10S29/00; Y10S29/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1103358A
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US1897634A
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US1686815A
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US1732615A
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US1887380A
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US2059976A
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US2102450A
Cited
US2034501A
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US2011441A
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US2143672A
Cited
US2265137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-07 | 1950-10-07 | 1951-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-07 | 1954-10-07 | 1955-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-07 | 1958-10-07 | 1959-04-08 | $7700.00 | Window Closed / Lapsed |