Patent US3605756A successfully refreshed from Google Patents.
US3605756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable filter cigarette
Assignee: Individual
•
Filing: 1967-10-09
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Granted: 1971-09-20
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Expires: 1987-10-09
Abstract
Abstract THE APPLICATION DISCLOSE A CIGARETTE CONTAINING A FINELY DIVIDED FILTER MEDIUM CAPABLE OF BEING SHIFTED TO VARY OR ADJUST THE DEGREE OF FILTERING ACTION.
Inventors
- 👤 Herman V D Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:48
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |