US3528484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystallizers for vacuum-melting installations,particularly electronbeam melting furnaces
Assignee: Edelstahlwerk VEB
•
Filing: 1967-09-15
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Granted: 1970-09-15
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Expires: 1987-09-15
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Scharf
- 👤 Dieter Rumberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:37
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/041; C; C22; C22B; C22B9/00; C22B9/04; C22B9/16; C22B9/22; C22B9/228; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA648872A
Cited
DE843287C
Cited
AT178432B
Cited
FR1249096A
Cited
GB1034473A
Cited
US3388736A
Cited
GB1022436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |