US3460113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory device with grooved substrate containing bit drive lines
Assignee: Individual
•
Filing: 1964-07-31
•
Granted: 1969-08-05
•
Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Hisao Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:55
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/04; G11C11/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A MAGNETIC MEMORY DEVICE WHICH COMPRISES A BASE PLATE HAVING A PLURALITY OF PARALLEL GROOVES RECESSED IN A SURFACE, A FILM HAVING A PLURALITY OF PARALLEL DRIVING CONDUCTORS THEREON, SAID FILM BEING SECURED ONTO THE GROOVED SURFACE OF SAID BASE PLATE IN SUCH A MANNER THAT THE DRIVING CONDUCTORS ARE CROSSED WITH SAID GROOVES, AND MEMORY WIRES FITTED IN SAID GROOVES, EACH OF SAID MEMORY WIRES CONSISTING OF A CORE CONDUCTOR AND A MAGNETIC FILM COVERING SAID CORE CONDUCTOR.
Claim 2
Dependent Claim
79 words
A MAGNETIC MEMORY DEVICE WHICH COMPRISES A BASE PLATE HAVING A PLURALITY OF PARALLEL GROOVES RECESSED IN A SURFACE, A FILM HAVING A PLURALITY OF PARALLEL DRIVING CONDUCTORS THEREON, SAID FILM BEING SECURED ONTO THE GROOVED SURFACE OF SAID BASE PLATE IN SUCH A MANNER THAT THE DRIVING CONDUCTORS ARE CROSSED WITH SAID GROOVES, AND MEMORY WIRES FITTED IN SAID GROOVES, EACH OF SAID MEMORY WIRES CONSISTING OF A CORE CONDUCTOR AND A MAGNETIC FILM COVERING SAID CORE CONDUCTOR.
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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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |