Patent US3092813A successfully refreshed from Google Patents.
US3092813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic device
Assignee: BROADBENT LAB Inc
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Filing: 1961-05-01
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Granted: 1963-06-04
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Broadbent Kent Dastrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:14
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0808; G11C19/0841; H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A MAGNETIC DEVICE COMPRISING AN ELONGATED MAGNETIC MEDIUM HAVING A PAIR OF EDGE PORTIONS COMPRISING AREAS EXTENDING LONGITUDINALLY ALONG THE EDGES OF SAID MEDIUM AND AN INNER PORTION EXTENDING LONGITUDINALLY ALONG SAID MEDIUM BETWEEN SAID EDGE PORTIONS, SAID EDGE PORTIONS HAVING A MAGNETIC HARDNESS WHICH IS HIGH RELATIVE TO THE MAGNETIC HARDNESS OF SAID INNER PORTION, SAID INNER PORTION HAVING A FIRST STATE OF MAGNETIZATION; INPUT MEANS MAGNETICALLY COUPLED TO SAID MAGNETIC MEDIUM AT A FIRST PREDETERMINED PLACE THEREOF FOR ESTABLISHING IN SAID MAGNETIC MEDIUM AN AREA OF A SECOND STATE OF MAGNETIZATION; OUTPUT MEANS RESPONSIVE TO THE STATE OF MAGNETIZATION OF SAID MAGNETIC MEDIUM AT A SECOND PREDETERMINED PLACE THEREOF SPACED FROM SAID FIRST PREDETERMINED PLACE BY A CONTINUOUS PORTION OF SAID MAGNETIC MEDIUM; AND MEANS MAGNETICALLY COUPLED TO SAID MAGNETIC MEDIUM ALONG SAID CONTINUOUS PORTION THEREOF FOR MOVING THE AREA OF SAID SECOND STATE OF MAGNETIZATION FROM SAID FIRST PREDETERMINED PLACE TO SAID SECOND PREDETERMINED PLACE ON SAID MAGNETIC MEDIUM WITHIN SAID CONTINUOUS PORTION THEREOF.
Claim 2
Dependent Claim
167 words
A MAGNETIC DEVICE COMPRISING AN ELONGATED MAGNETIC MEDIUM HAVING A PAIR OF EDGE PORTIONS COMPRISING AREAS EXTENDING LONGITUDINALLY ALONG THE EDGES OF SAID MEDIUM AND AN INNER PORTION EXTENDING LONGITUDINALLY ALONG SAID MEDIUM BETWEEN SAID EDGE PORTIONS, SAID EDGE PORTIONS HAVING A MAGNETIC HARDNESS WHICH IS HIGH RELATIVE TO THE MAGNETIC HARDNESS OF SAID INNER PORTION, SAID INNER PORTION HAVING A FIRST STATE OF MAGNETIZATION; INPUT MEANS MAGNETICALLY COUPLED TO SAID MAGNETIC MEDIUM AT A FIRST PREDETERMINED PLACE THEREOF FOR ESTABLISHING IN SAID MAGNETIC MEDIUM AN AREA OF A SECOND STATE OF MAGNETIZATION; OUTPUT MEANS RESPONSIVE TO THE STATE OF MAGNETIZATION OF SAID MAGNETIC MEDIUM AT A SECOND PREDETERMINED PLACE THEREOF SPACED FROM SAID FIRST PREDETERMINED PLACE BY A CONTINUOUS PORTION OF SAID MAGNETIC MEDIUM; AND MEANS MAGNETICALLY COUPLED TO SAID MAGNETIC MEDIUM ALONG SAID CONTINUOUS PORTION THEREOF FOR MOVING THE AREA OF SAID SECOND STATE OF MAGNETIZATION FROM SAID FIRST PREDETERMINED PLACE TO SAID SECOND PREDETERMINED PLACE ON SAID MAGNETIC MEDIUM WITHIN SAID CONTINUOUS PORTION THEREOF.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |