US3170112A
Expired / Lapsed
US
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Magnetic circuit means and alloy components of constant magnetic permeability therefor
Assignee: Deutsche Edelstahlwerke AG
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Filing: 1960-02-15
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Granted: 1965-02-16
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Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Bungardt Karl
- 👤 Dietrich Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:31
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/30; C22C38/22; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
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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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |