Patent US2925629A successfully refreshed from Google Patents.
US2925629A
Expired / Lapsed
US
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Method and apparatus for producing fibrous structures
Assignee: WALSCO Co
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Filing: 1957-03-25
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Granted: 1960-02-23
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Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Sittel Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:21
CPC Classifications
D; D04; D04H; D04H11/00; D04H1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US668792A
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US760494A
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US884157A
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US1510252A
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US2048651A
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US2231324A
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US2357658A
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US2462487A
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US2702261A
Cited
US2719336A
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FR1124895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |