US2490538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chicken house manure conveyer
Assignee: Individual
•
Filing: 1948-12-22
•
Granted: 1949-12-06
•
Expires: 1968-12-22
Abstract
No abstract record available.
Inventors
- 👤 George A Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:29
CPC Classifications
A; A01; A01K; A01K31/00; A01K31/04; B; B65; B65G; B65G41/00; B65G41/001; B65G41/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US389538A
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US455355A
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US2343133A
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US676504A
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US987809A
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US1558300A
Cited
DE468006C
Cited
US1800428A
Cited
US1989537A
Cited
US1933485A
Cited
US2320667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |