US2446772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined wet screening and shredding apparatus
Assignee: Ralph B Carter Co
•
Filing: 1945-08-03
•
Granted: 1948-08-10
•
Expires: 1965-08-03
Abstract
No abstract record available.
Inventors
- 👤 William C Laughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:15
CPC Classifications
E; E02; E02B; E02B8/00; E02B8/02; E02B8/023; E02B8/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US466453A
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US677567A
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US819720A
Cited
US1243525A
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US1745001A
Cited
US2199788A
Cited
US2106851A
Cited
US2317416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |