US2684154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulp screening apparatus
Assignee: Mining Process and Patent Co
•
Filing: 1950-07-18
•
Granted: 1954-07-20
•
Expires: 1970-07-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Daman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:37
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B07; B07B; B07B1/00; B07B1/18; B07B1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 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 |