US2611311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke absorbent smoker
Assignee: Individual
•
Filing: 1946-12-06
•
Granted: 1952-09-23
•
Expires: 1966-12-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert G Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:46
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/044; A23B4/052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2099788A
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US1116135A
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US1214992A
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US1280054A
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US1460975A
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US1536692A
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US2072364A
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US2168388A
Cited
US2262910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |