Patent US3460244A successfully refreshed from Google Patents.
US3460244A
Expired / Lapsed
US
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Method of manufacturing a multi-track magnetic head
Assignee: AT&T Teletype Corp
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Filing: 1965-09-10
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Granted: 1969-08-12
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Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Jack L Metz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:27
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/29; G11B5/295; G11B5/48; G11B5/58; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49027; Y10T29/49028; Y10T29/4903; Y10T29/49032; Y10T29/49053; Y10T29/4981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2585913A
Cited
US2650957A
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US2706752A
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US2915812A
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US2838834A
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US3000078A
Cited
US3177495A
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US3271843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |