Patent US2874631A successfully refreshed from Google Patents.
US2874631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charcoaler
Assignee: Individual
•
Filing: 1956-02-14
•
Granted: 1959-02-24
•
Expires: 1976-02-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph D Cooksley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:49
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/07; A47J37/0704; A47J37/0709
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US619314A
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US1043667A
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US1263331A
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GB120426A
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US1591291A
Cited
US1542867A
Cited
US2026797A
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US2253834A
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US2417266A
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US2450563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |