Dental obturation screw
Patent 4334865 Issued on June 15, 1982. Estimated Expiration Date: 
October 30, 2000. 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.
October 30, 2000. 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 430522 1285785 2411758 2655724 3085334 3672058 Dental implant having a biocompatible surface Patent #: 4185383 InventorApplicationNo. 06/202434 filed on 10/30/1980US Classes:433/221, Having surface grooves or ridges433/174By screwExaminersPrimary: Mancene, GeneAssistant: Wilson, John J. Attorney, Agent or FirmInternational ClassesA61C 13/225 (20060101)A61C 13/30 (20060101) A61C 3/02 (20060101) Foreign Application Priority Data1979-11-05 CHAbstractA dental obturation screw is disclosed which comprises a threaded rod and a screw head allowing to actuate the screw and to fasten thereon an articial tooth or tooth part. The screw has a bearing part of convex, axially symmetrical shape which is adapted to rest on a corresponding bearing surface of the part of a natural tooth to be obturated. | |
