Patent US2684019A successfully refreshed from Google Patents.
US2684019A
Expired / Lapsed
US
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Papermaking machine
Assignee: Pusey & Jones Corp
•
Filing: 1950-11-14
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Granted: 1954-07-20
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Expires: 1970-11-14
Abstract
No abstract record available.
Inventors
- 👤 Harry H Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:25
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/02; D21F1/00; D21F1/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1870971A
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US1772484A
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US1881404A
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GB408527A
Cited
US2186761A
Cited
US2345647A
Cited
US2550552A
Cited
US2509822A
Cited
US2581210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |