US2919495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of papermaking
Assignee: Bowaters Development and Research Ltd
•
Filing: 1955-04-15
•
Granted: 1960-01-05
•
Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Underhay George Flaxman
- 👤 Franklin John Neil
- 👤 Wells Archibald Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:49
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2022593A
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US2166379A
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US2218282A
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US2304818A
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US2366484A
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US2526012A
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US2622343A
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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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |