Patent US2466251A successfully refreshed from Google Patents.
US2466251A
Expired / Lapsed
US
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Method of and apparatus for measuring the length of magnetic material
Assignee: Individual
•
Filing: 1944-02-28
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Granted: 1949-04-05
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Expires: 1964-02-28
Abstract
No abstract record available.
Inventors
- 👤 Philip W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:52
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/04; G01B7/042; G01B7/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1603284A
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US1841951A
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US2259904A
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US2265137A
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US2228623A
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US2332797A
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US2439446A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |