Patent US3525507A successfully refreshed from Google Patents.
US3525507A
Expired / Lapsed
US
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Fluidized-bed system for patenting steel wire
Assignee: Huettenwerk Oberhausen AG
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Filing: 1967-10-16
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Granted: 1970-08-25
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Expires: 1987-10-16
Abstract
No abstract record available.
Inventors
- 👤 Hans Geipel
- 👤 Eckehardt Forster
- 👤 Wilfried Heinemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:06
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/26; B21C47/262; C; C21; C21D; C21D9/00; C21D9/52; C21D9/525; C21D9/54; C21D9/56; C21D9/567
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) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |