Patent US2488700A successfully refreshed from Google Patents.
US2488700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for paper manufacture
Assignee: Riegel Paper Corp
•
Filing: 1945-05-17
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Granted: 1949-11-22
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Expires: 1965-05-17
Abstract
No abstract record available.
Inventors
- 👤 George L Bidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:21
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE165877C
Cited
US708219A
Cited
US840228A
Cited
US920100A
Cited
US1152747A
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DE350674C
Cited
US1385341A
Cited
US1599378A
Cited
US1599385A
Cited
US1829660A
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US1655511A
Cited
US1799350A
Cited
US2073654A
Cited
US1927378A
Cited
US1917098A
Cited
US1974103A
Cited
US2396696A
Cited
US2394509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |