US2725504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hall effect device
Assignee: General Electric Co
•
Filing: 1951-11-29
•
Granted: 1955-11-29
•
Expires: 1971-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:09
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/20; G01R15/202; H; H03; H03F; H03F15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A HALL EFFECT DEVICE COMPRISING A SINGLE HALL PLATE HAVING FLAT OPPOSING MAJOR FACES AND A THICKNESS LESS THAN 0.010 INCH, TWO LAYERS OF ELECTRIC INSULATION EACH SECURED TO AND COVERING A RESPECTIVE MAJOR FACE OF SAID HALL PLATE, AND TWO FERROMAGNETIC PLATES EACH SECURED TO AND COVERING A RESPECTIVE INSULATION LAYER.
Claim 2
Dependent Claim
52 words
A HALL EFFECT DEVICE COMPRISING A SINGLE HALL PLATE HAVING FLAT OPPOSING MAJOR FACES AND A THICKNESS LESS THAN 0.010 INCH, TWO LAYERS OF ELECTRIC INSULATION EACH SECURED TO AND COVERING A RESPECTIVE MAJOR FACE OF SAID HALL PLATE, AND TWO FERROMAGNETIC PLATES EACH SECURED TO AND COVERING A RESPECTIVE INSULATION LAYER.
References Cited (Backward Citations)
US1825855A
Cited
US2154260A
Cited
US2333446A
Cited
US2464807A
Cited
US2543640A
Cited
US2551265A
Cited
US2649574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |