US2274654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain box for papermaking machines
Assignee: Beloit Iron Works Inc
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Filing: 1937-05-03
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Granted: 1942-03-03
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Expires: 1957-05-03
Abstract
No abstract record available.
Inventors
- 👤 Earl E Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02; D21F1/028; D21F1/48; D21F1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-03-02 | 1945-09-01 | 1946-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-02 | 1949-09-01 | 1950-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-02 | 1953-09-01 | 1954-03-03 | $7700.00 | Window Closed / Lapsed |