US3276000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory device and method
Assignee: Unisys Corp
•
Filing: 1963-01-30
•
Granted: 1966-09-27
•
Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 William W Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:15
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/04; G11C11/14; G11C5/00; G11C5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A MULTI-BIT MEMORY APPARATUS COMPRISING: A NON-MAGNETIZABLE BASE MEMBER; A TUBULAR MEMORY ELEMENT OF MAGNETIZABLE MATERIAL DEFINED BY A WEB FORMED BY TWO SPACED-APART APERTURES IN SAID NON-MAGNETIZABLE BASE MEMBER; A PLURALITY OF PAIRS OF PRINTED CIRCUIT CONDUCTORS; A SEPARATE, DISCRETE CIRCUMFERENTIAL AREA OF SAID ELEMENT SANDWICHED BETWEEN AND SUBSTANTIALLY MAGNETICALLY COUPLED TO ONLY A SEPARATE PAIR OF SAID PRINTED CIRCUIT CONDUCTORS; EACH OF SAID AREAS DEFINING A SEPARATE ONE OF SAID MULTIBITS.
Claim 2
Dependent Claim
73 words
A MULTI-BIT MEMORY APPARATUS COMPRISING: A NON-MAGNETIZABLE BASE MEMBER; A TUBULAR MEMORY ELEMENT OF MAGNETIZABLE MATERIAL DEFINED BY A WEB FORMED BY TWO SPACED-APART APERTURES IN SAID NON-MAGNETIZABLE BASE MEMBER; A PLURALITY OF PAIRS OF PRINTED CIRCUIT CONDUCTORS; A SEPARATE, DISCRETE CIRCUMFERENTIAL AREA OF SAID ELEMENT SANDWICHED BETWEEN AND SUBSTANTIALLY MAGNETICALLY COUPLED TO ONLY A SEPARATE PAIR OF SAID PRINTED CIRCUIT CONDUCTORS; EACH OF SAID AREAS DEFINING A SEPARATE ONE OF SAID MULTIBITS.
References Cited (Backward Citations)
US2985948A
Cited
US2961745A
Cited
US3093818A
Cited
US2934748A
Cited
US2910673A
Cited
US3138785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |