US2960744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equilibrium atmosphere tunnel kilns for ferrite manufacture
Assignee: General Electric Co
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Filing: 1957-10-08
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Granted: 1960-11-22
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Expires: 1977-10-08
Abstract
No abstract record available.
Inventors
- 👤 John M Blank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:04
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/0302; H01F1/0311; H01F1/0313; H01F1/0315; C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; F; F27; F27B; F27B9/00; F27B9/04; F27B9/045; F27B9/047; F27B9/30; F27B9/40; F27D; F27D19/00; F27D2019/0028; F27D2019/0068; F27M; F27M2001/00; F27M2001/15; F27M2001/1504
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |