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Patent US3151318A successfully refreshed from Google Patents.
US3151318A
Expired / Lapsed
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Automatic gate and sense preamplifier
Assignee: Unisys Corp
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Filing: 1961-03-13
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Granted: 1964-09-29
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Expires: 1981-03-13
Abstract
No abstract record available.
Inventors
- 👤 Louzelle A Luke
- 👤 William M Overn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:10
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/58; G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; G11C11/06014; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
FOR USE WITH A BISTABLE MAGNETIC STORAGE ELEMENT, HAVING FIRST AND SECOND STABLE STATES OF REMANENT MAGNETIZATION, DRIVE MEANS FOR CARRYING AN INTERROGATE PULSE, SENSE WINDING MEANS FOR ELECTRICALLY INDICATING THE REMANENT STATE OF THE ELEMENT IN RESPONSE TO THE INTERROGATE PULSE, AN OUTPUT TERMINAL, TIME DELAY MEANS ELECTRICALLY COUPLING SAID DRIVE MEANS TO SAID TERMINAL FOR PASSING AT LEAST A PORTION OF THE INTERROGATE PULSE TO THE TERMINAL AFTER A PREDETERMINED TIME DELAY, AND GATING MEANS INCLUDING A SEMICONDUCTIVE ELEMENT EXHIBITING A NEGATIVE RESISTANCE REGION BETWEEN TWO POSITIVE RESISTANCE REGIONS AT FIRST AND SECOND VOLTAGE VALUES ELECTRICALLY ASSOCIATED WITH SAID TERMINAL AND SAID SENSE MEANS AND BEING ADAPTED TO BE SELECTIVELY PLACED IN A CERTAIN POSI-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |