US2955169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic reproducing and recording head
Assignee: Individual
•
Filing: 1954-11-02
•
Granted: 1960-10-04
•
Expires: 1974-11-02
Abstract
No abstract record available.
Inventors
- 👤 Stedtnitz Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:50
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; G; G11; G11B; G11B5/00; G11B5/127; G11B5/265; G11B5/48; G11B5/49; G11B5/4907; G11B5/4969; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2618709A
Cited
US2743320A
Cited
US2641656A
Cited
US2822427A
Cited
US2806904A
Cited
US2704789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |