US2698183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive control mechanism for magnetic recording apparatus
Assignee: Int Electronics Co
•
Filing: 1948-05-03
•
Granted: 1954-12-28
•
Expires: 1968-05-03
Abstract
No abstract record available.
Inventors
- 👤 Albert P Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:56
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US723333A
Cited
US967311A
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US2229293A
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US2268645A
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US2412078A
Cited
US2581499A
Cited
US2530029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |