US3109985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetoresistive elements and devices
Assignee: Gulton Industries Inc
•
Filing: 1957-10-04
•
Granted: 1963-11-05
•
Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Heinz E Kallmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:43
CPC Classifications
H; H04; H04R; H04R23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A CIRCUIT COMPRISING IN COMBINATION A MAGNET PROVIDED WITH AN ANNULAR GAP WITH THE MAGNETIC FLUX PASSING RADIALLY THERETHROUGH, A MAGNETORESISTIVE ELEMENT OF HOLLOW CYLINDRICAL SHAPE INTERPOSED IN SAID GAP AND SUBSTANTIALLY CONCENTRIC THEREWITH, ELECTRODE MEANS COUPLED TO THE TWO FLAT ENDS OF SAID CYLINDER, MEANS FOR LONGITUDINALLY MOVING SAID ELEMENT WITH RESPECT TO SAID GAP TO VARY THE
Claim 2
Dependent Claim
59 words
A CIRCUIT COMPRISING IN COMBINATION A MAGNET PROVIDED WITH AN ANNULAR GAP WITH THE MAGNETIC FLUX PASSING RADIALLY THERETHROUGH, A MAGNETORESISTIVE ELEMENT OF HOLLOW CYLINDRICAL SHAPE INTERPOSED IN SAID GAP AND SUBSTANTIALLY CONCENTRIC THEREWITH, ELECTRODE MEANS COUPLED TO THE TWO FLAT ENDS OF SAID CYLINDER, MEANS FOR LONGITUDINALLY MOVING SAID ELEMENT WITH RESPECT TO SAID GAP TO VARY THE
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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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |