Delayed ventilation cigarette
Abstract
Abstract A DELAYED DILUTION OR VENTILATION TYPE CIGARETTE IN WHICH THE CIGARETTE HAS AN INNER SLEEVE OF A SUITABLE MATERIAL ENCLOSING THE TOBACCO FILLER ALONG A LENGTH THEREOF FROM THE BUTT END A DISTANCE IN THE DIRECTION OF THE OTHER END. THE INNER SLEEVE IN TURN IS ENCLOSED BY THE CONVENTIONAL OR OUTER PAPER WRAPPER OF THE TOBACCO CYLINDER, SUCH SLEEVE INCLUDING PROJECTIONS OR OPENINGS IN THE SURFACE THEREOF WHICH COOPERATE WITH THE INSIDE SURFACE OF THE OUTER WRAPPER TO FORM A SERIES OF CIGARETTE VENTILATION PASSAGES WITHIN THE CIGARETTE STRUCTURE, THE VENTILATION PASSAGES BEING PLACED IN COMMUNICATION WITH ATMOSPHERE ONLY AFTER ABOUT HALF THE LENGTH OF THE TOBACCO CYLINDER LENGTH HAS BEEN SMOKED.
Inventors
- 👤 Gerald M Wilson
Bibliographic Details
Claims Analysis
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |