US3494366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cigarette having heat sink means for removing impurities from cigarette smoke
Assignee: HERMAN S STARBUCK
•
Filing: 1967-04-03
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Granted: 1970-02-10
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Herman S Starbuck
- 👤 Neal Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:05
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D1/00; A24D1/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1231876A
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FR584328A
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US2141078A
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US2669995A
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US2765515A
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US2764513A
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US2827903A
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US2998819A
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US3038477A
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US3028864A
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US3167076A
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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) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |