Tooth crown center locating device
Patent 4725228 Issued on February 16, 1988. Estimated Expiration Date: 
May 1, 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.
May 1, 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 3906634 Jaw implant measuring instrument Orthodontic attachment placement device Patent #: 4478576 InventorApplicationNo. 07/045100 filed on 05/01/1987US Classes:433/3, Tool433/72Having gauge or guideExaminersPrimary: Peshock, RobertAttorney, Agent or FirmInternational ClassesA61C 7/02 (20060101)A61C 7/00 (20060101) A61C 19/04 (20060101) AbstractA tooth crown marking device is comprised of markers at each end. The marker at one end is for marking a specified vertical landmark on the face of a tooth crown. The marker at the other end is for marking the horizontal center of a tooth crown. At that end, there is a pair of locating members adjustably mounted on either side of the horizontal marking arm in such a manner that the marking arm is maintained equidistant from the locating members. Pointers at the end of each locating member are adjusted to span the height of the crown. The horizontal center of a tooth crown is then marked by the marking arm which may be movably mounted on a support column along which the two locating members are mounted or mounted to the support column by a swivel arm. | |
