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US2898429A
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Crucible-free zone-melting apparatus
Assignee: Siemens Schuckertwerke AG
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Filing: 1958-11-14
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Granted: 1959-08-04
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Expires: 1978-11-14
Abstract
No abstract record available.
Inventors
- 👤 Emeis Reimer
- 👤 Keller Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:40
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/16; C30B13/20; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1076; Y10T117/1088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2870309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |