Orthodontic trivider
Patent 4822277 Issued on April 18, 1989. Estimated Expiration Date: 
December 15, 2007. 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.
December 15, 2007. 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 3686762 Direct bonding bracket positioning and mounting tool Tooth crown center locating device Patent #: 4725228 InventorApplicationNo. 07/132966 filed on 12/15/1987US Classes:433/3ToolExaminersPrimary: Peshock, RobertAttorney, Agent or FirmInternational ClassesA61C 7/14 (20060101)A61C 7/00 (20060101) Foreign Application Priority Data1986-12-22 AUAbstractAn orthodontic apparatus is disclosed comprising a divider like device with three arms. The outer arms operate in normal fashion while the central arm is coupled to the adjusting wheel so that its relative position with respect to the outer arm is constant. The central arm has a bracket retaining reverse tweezer arrangement for holding and positioning orthodontic brackets on teeth. In use the outer arms are located on either side of the tooth and the central arm locates the bracket in the correct position for fixing to the tooth. | |
