US2963960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the expulsion of liquid from fibrous materials
Assignee: National Research Development Corp UK
•
Filing: 1956-02-17
•
Granted: 1960-12-13
•
Expires: 1976-02-17
Abstract
No abstract record available.
Inventors
- 👤 Pirie Norman Wingate
- 👤 Fairclough David
- 👤 Wiseman-Shardlow Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:44
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/04; B30B9/10; B30B9/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB326494A
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DE288521C
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US181775A
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US298864A
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US429544A
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US655998A
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US729723A
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US730195A
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US2272009A
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US2281860A
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US2700333A
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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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |