Patent US6389340B1 successfully refreshed from Google Patents.
US3475894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of strands from fibrous material,particularly asbestos fibers
Assignee: Rex Asbestwerke Graf Von Rex KG
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Filing: 1967-10-23
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Granted: 1969-11-04
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Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 Werner Wilke
- 👤 Hans Fetzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:39
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/16; D02G3/20; Y; Y10; Y10S; Y10S264/00; Y10S264/19; Y10S57/00; Y10S57/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2269563A
Cited
US2743573A
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US2698972A
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US2780909A
Cited
US2817947A
Cited
GB936628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |