US3417356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the infinitely variable correction of the marginal field of a magnet
Assignee: Rheinmetall Air Defence AG
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Filing: 1967-02-13
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Granted: 1968-12-17
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Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 Tschopp Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:21
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202; F; F25; F25B; F25B2321/00; F25B2321/002; F25B2321/0023
Claims Analysis
Total Claims: 0
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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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |