Patent US2686845A successfully refreshed from Google Patents.
US2686845A
Expired / Lapsed
US
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Equipment for use with elongated magnetic records
Assignee: Int Electronics Co
•
Filing: 1948-02-28
•
Granted: 1954-08-17
•
Expires: 1968-02-28
Abstract
No abstract record available.
Inventors
- 👤 Frank J Reed
- 👤 Lloyd J Bobb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:28
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B15/00; G11B15/18; G11B15/24; G11B15/26; G11B15/28; G11B15/44; G11B15/442; G11B15/60; G11B15/66
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) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |