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US3015536A
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Assignee: E H SARGENT AND CO
•
Filing: 1957-05-31
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Granted: 1962-01-02
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Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Carl A Nielsen
- 👤 Edward F Ewen
- 👤 Paul H Sherrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/34
Claims Analysis
Total Claims: 0
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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) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |