US2668674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism for magnetic tape record machine
Assignee: Int Electronics Co
•
Filing: 1947-04-26
•
Granted: 1954-02-09
•
Expires: 1967-04-26
Abstract
No abstract record available.
Inventors
- 👤 Roberts Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:57
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/18; G11B15/22; G11B15/26; G11B15/28; G11B15/44; G11B15/444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1926862A
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US1439058A
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US1845462A
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US2191554A
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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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |