US3089995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hall-effect apparatus
Assignee: AT&T Inc
•
Filing: 1960-06-06
•
Granted: 1963-05-14
•
Expires: 1980-06-06
Abstract
No abstract record available.
Inventors
- 👤 David A Kleinman
- 👤 Arthur L Schawlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:14
CPC Classifications
H; H02; H02M; H02M11/00; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/625; G05F1/652; H03; H03K; H03K17/00; H03K17/51; H03K17/92
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
IN COMBINATION, A DIRECT-CURRENT VOLTAGE SOURCE COMPRISING AN ALTERNATING VOLTAGE SOURCE AND A PAIR OF HALLEFFECT DISKS CONNECTED IN FULL-WAVE RECTIFICATION RELATION WITH SAID ALTERNATING VOLTAGE SOURCE, REGULATING MEANS COMPRISING A THIRD HALL-EFFECT DISK CONNECTED IN PARALLEL ACROSS THE DIRECT-CURRENT VOLTAGE SOURCE, A FOURTH HALLEFFECT DISK, A FIRST COIL CONNECTED IN PARALLEL WITH SAID FOURTH HALL-EFFECT DISK AND ORIENTED TO HAVE ITS AXIS NORMAL TO THE DISK, A SECOND COIL CONNECTED SERIALLY BETWEEN SAID FOURTH HALL-EFFECT DISK AND THE REGULATED DIRECTCURRENT VOLTAGE SOURCE, AND AN OUTPUT BRANCH INCLUDING
References Cited (Backward Citations)
US1778796A
Cited
US2619627A
Cited
US2774890A
Cited
US2939916A
Cited
US3008083A
Cited
US2909679A
Cited
US2986724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |