US2937241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise compensation means in a magnetic recorder
Assignee: WESTGATE LAB Inc
•
Filing: 1958-12-18
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Granted: 1960-05-17
•
Expires: 1978-12-18
Abstract
No abstract record available.
Inventors
- 👤 Colbert Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:15
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0007; G11B5/00; G11B5/02; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2704790A
Cited
US2685079A
Cited
US2713676A
Cited
US2871464A
Cited
US2807797A
Cited
US2866012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |