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Patent US2890497A successfully refreshed from Google Patents.
US2890497A
Expired / Lapsed
US
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Machine for forming random fiber webs
Assignee: Curlator Corp
•
Filing: 1954-03-10
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Granted: 1959-06-16
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Expires: 1974-03-10
Abstract
No abstract record available.
Inventors
- 👤 Howard H Langdon
- 👤 Francis M Buresh
- 👤 Richard R Castor
- 👤 Robert E Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:24
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US451136A
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US475246A
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US1092857A
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US1642135A
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US1948395A
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US1697647A
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US2071438A
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US2452427A
Cited
US2451915A
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US2719337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |