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US2642950A
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Deaerating a suspension of cellulosic fibers
Assignee: ROTAREAED Corp
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Filing: 1951-11-30
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Granted: 1953-06-23
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Carleton L Clark
- 👤 Vicario Carlo
- 👤 Cornelius J Lyons
- 👤 James A Smith
- 👤 William W Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:03
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US280905A
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US474490A
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US1396632A
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US1883662A
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US1910088A
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US2201870A
Cited
US2247897A
Cited
US2346423A
Cited
US2484577A
Cited
US2614656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |