US3140472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transfer apparatus
Assignee: International Business Machines Corp
•
Filing: 1959-12-30
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Granted: 1964-07-07
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 Lester R Adams
- 👤 Edward H Sommerfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:12
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
DATA TRANSFER APPARATUS COMPRISING IN COMBINATION, A PLURALITY OF CHANNELS, A CAPACITOR CONNECTED TO EACH OF SAID CHANNELS, A PLURALITY OF STORAGE ELEMENTS EACH COMPRISING A MAGNETIC CORE HAVING SUBSTANTIAL RETENTIVITY WITH WINDING MEANS DISPOSED THEREON, MEANS FOR SELECTIVELY ENERGIZING SAID WINDING MEANS TO READ DATA OUT OF SAID MAGNETIC CORES, SWITCHING MEANS ARRANGED TO BE SELECTIVELY ACTIVATED FOR CONNECTING THE SELECTIVELY ENERGIZED WINDING MEANS TO SAID CHANNELS TO SELECTIVELY CHARGE SAID CAPACITORS, AND SELECTIVE MEANS FOR DISCHARGING SAID CAPACITORS THROUGH SELECTED ONES OF SAID WINDING MEANS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |