Patent US3069755A successfully refreshed from Google Patents.
US3069755A
Expired / Lapsed
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Method for making multi-unit electromagnetic head
Assignee: Texas Instruments Inc
•
Filing: 1955-11-21
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Granted: 1962-12-25
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Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Robert H Berkshire
- 👤 Lloyd E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:26
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/29; G11B5/295; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071; Y10T29/49073
Claims Analysis
Total Claims: 0
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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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |