Patent US3304523A successfully refreshed from Google Patents.
US3304523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field straightener
Assignee: Thales SA
•
Filing: 1964-09-28
•
Granted: 1967-02-14
•
Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jaouen Jean
- 👤 Martinot-Lagarde Philippe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:01
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J23/0876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN COMBINATION, A HOLLOW MEANS OPERABLE TO PRODUCE A MAGNETIC FIELD AND A FIELD STRAIGHTENER POSITIONED WITHIN THE HOLLOW SPACE OF SAID MEANS, SAID FIELD STRAIGHTENER INCLUDING RING-LIKE ELEMENTS OF NON-MAGNETIC MATERIAL ALTERNATING WITH RING-LIKE SETS, EACH CONTAINING IN A SUBSTANTIALLY COMMON PLANE RING-LIKE ELEMENTS OF NON-MAGNETIC MATERIAL ALTERNATING WITH RING-LIKE ELEMENTS OF HIGH PERMEABILITY MAGNETIC MATERIAL.
Claim 2
Dependent Claim
57 words
IN COMBINATION, A HOLLOW MEANS OPERABLE TO PRODUCE A MAGNETIC FIELD AND A FIELD STRAIGHTENER POSITIONED WITHIN THE HOLLOW SPACE OF SAID MEANS, SAID FIELD STRAIGHTENER INCLUDING RING-LIKE ELEMENTS OF NON-MAGNETIC MATERIAL ALTERNATING WITH RING-LIKE SETS, EACH CONTAINING IN A SUBSTANTIALLY COMMON PLANE RING-LIKE ELEMENTS OF NON-MAGNETIC MATERIAL ALTERNATING WITH RING-LIKE ELEMENTS OF HIGH PERMEABILITY MAGNETIC MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |