Tobacco product
Patent 4027679 Issued on June 7, 1977. Estimated Expiration Date: 
June 7, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 7, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3065755 3258015 3349776 3356094 3674036 3756249 3773053 3774622 3863644 3905377 InventorApplicationNo. 05/711218 filed on 08/03/1976US Classes:131/339, Interior surface causes particular flow characteristic131/363Filler penetratingExaminersPrimary: Michell, Robert W.Assistant: Millin, V. International ClassA24D 1/00 (20060101)AbstractThis invention provides a smoke vector for a cigarette, and the like, for modifying or altering the mainstream smoke at or near the combustion zone or burning zone. The smoke vector comprises a thin walled elongated, impervious tube-like member or vector which is hollow and empty. The vector extends longitudinally through the cigarette and terminates with an impervious mouth end. During an indrawn breath by the smoker, the products of the combustion of tobacco in systemic heat is below the formation temperatures of temperature dependant hazardous chemicals. | |
