US2456249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing variegated fiber lengths in the manufacture of paper
Assignee: Riegel Paper Corp
•
Filing: 1944-04-21
•
Granted: 1948-12-14
•
Expires: 1964-04-21
Abstract
No abstract record available.
Inventors
- 👤 George L Bidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:00
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US496814A
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US763818A
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US1842577A
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US2055142A
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US2055143A
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US2283155A
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US2200410A
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US2270847A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |