Pharmaceutical local anesthetic compositions
Patent 3957996 Issued on May 18, 1976. Estimated Expiration Date: 
May 18, 1993. 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.
May 18, 1993. 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 References3812147 InventorsAssigneeApplicationNo. 369147 filed on 06/12/1973US Classes:514/267Tricyclo ring system having 1,3-diazine as one of the cyclosExaminersPrimary: Turner, A. A.Attorney, Agent or FirmAbstractA local anesthetic composition comprising a mixture in a pharmaceutically acceptable carrier of a particular toxin, namely, saxitoxin, and another compound, generally a conventional local anesthetic compound or a similar compound having nerve-blocking properties.Other References
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