US3534470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for assembling magnetic tape heads using a consumable fixture
Assignee: International Business Machines Corp
•
Filing: 1968-01-04
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Granted: 1970-10-20
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Expires: 1988-01-04
Abstract
No abstract record available.
Inventors
- 👤 Louis H Faure
- 👤 Alfred T Hardart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:51
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/29; G11B5/295; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49041; Y10T29/49055; Y10T29/49059; Y10T29/49799; Y10T29/53; Y10T29/5313; Y10T29/53265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2915812A
Cited
US2988804A
Cited
US3064333A
Cited
US3319238A
Cited
US3348301A
Cited
US3400386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |