Artificial Christmas tree structure
Patent 4172913 Issued on October 30, 1979. Estimated Expiration Date: 
September 23, 1997. 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.
September 23, 1997. 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 ReferencesInventorsApplicationNo. 05/836090 filed on 09/23/1977US Classes:428/9, Collapsible211/196, Including central support (e.g., tree-like, etc.)403/109.8, Self-locking428/20KnockdownExaminersPrimary: Epstein, Henry F.Attorney, Agent or FirmInternational ClassesA47G 33/06 (20060101)A47G 33/00 (20060101) AbstractA telescoping artificial tree having a display stand and a centrally located base portion within the display stand and extending therefrom a support tube or rod surrounded by a plurality of tubing cylinders each having a support collar, with the cylinders located sequentially, concentrically and axially in a spaced relation to one another such that the diameter of each cylinder decreases inwardly toward the support tube or rod, with the support collar having a hinge slot and locking notch adapted to receive a hinge base with a locking tab respectively where the hinge base is adapted to receive a hinge extension to form a hinge assembly such that the limbs of the tree extend from the hinge extension when located therein. | |
