US3175200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data storage apparatus
Assignee: International Business Machines Corp
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Filing: 1960-06-24
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Granted: 1965-03-23
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Expires: 1980-06-24
Abstract
No abstract record available.
Inventors
- 👤 Hoffman George Richard
- 👤 Turner John Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:48
CPC Classifications
G; G11; G11C; G11C7/00; G11C7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
DATA STORAGE APPARATUS COMPRISING A BLOCK OF INSULATING MATERIAL, BORES IN SAID BLOCK, A SET OF HOLLOW CYLINDERS OF MAGNETIC MATERIAL FORMING A COLUMN IN EACH OF SAID BORES, AN AXIAL CONDUCTOR THREADING THE CYLINDERS OF EACH OF SAID COLUMNS, AN OUTER CYLINDRICAL CONDUCTOR EMBRACING THE CYLINDERS OF EACH OF SAID COLUMNS AND A PLURALITY OF BALANCED PAIR TRANSMISSION LINE STRUCTURES, THE CONDUCTORS OF WHICH FORM A PARALLEL ARRAY ON EACH FACE OF SAID BLOCK EMBRACING EACH ROW OF CYLINDERS FORMED BY THE CORRESPONDING CYLINDERS OF SAID COLUMNS.
Claim 2
Dependent Claim
88 words
DATA STORAGE APPARATUS COMPRISING A BLOCK OF INSULATING MATERIAL, BORES IN SAID BLOCK, A SET OF HOLLOW CYLINDERS OF MAGNETIC MATERIAL FORMING A COLUMN IN EACH OF SAID BORES, AN AXIAL CONDUCTOR THREADING THE CYLINDERS OF EACH OF SAID COLUMNS, AN OUTER CYLINDRICAL CONDUCTOR EMBRACING THE CYLINDERS OF EACH OF SAID COLUMNS AND A PLURALITY OF BALANCED PAIR TRANSMISSION LINE STRUCTURES, THE CONDUCTORS OF WHICH FORM A PARALLEL ARRAY ON EACH FACE OF SAID BLOCK EMBRACING EACH ROW OF CYLINDERS FORMED BY THE CORRESPONDING CYLINDERS OF SAID COLUMNS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |