US2736246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Papermaking machine
Assignee: —
•
Filing: —
•
Granted: 1956-02-28
•
Expires: 1973-02-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:25
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE254873C
Cited
US1590321A
Cited
US645925A
Cited
US1461683A
Cited
GB423646A
Cited
DE682846C
Cited
US2381286A
Cited
US2566450A
Cited
US2566449A
Cited
US2509822A
Cited
US2677991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |