Training shoelace
Patent 4721468 Issued on January 26, 1988. Estimated Expiration Date: 
March 6, 2005. 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.
March 6, 2005. 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 273798 487411 2306515 2646630 2869205 2973597 3256129 3857139 Shoe tying instructional device Slip-resistant binding Patent #: 4247967 InventorsApplicationNo. 06/708797 filed on 03/06/1985US Classes:434/260, Manipulation of tool or fastener (e.g., zipper, shoelaces, etc.)24/712DRAWSTRING, LACED-FASTENER, OR SEPARATE ESSENTIAL COOPERATING DEVICE THEREFORExaminersPrimary: Grieb, William H.Attorney, Agent or FirmInternational ClassesA43C 9/00 (20060101)G09B 19/00 (20060101) AbstractA shoelace is described for use by young children or the handicapped, which facilitates tying of a bow. The shoelace has opposite end portions which are just stiff enough to substantially retain the shape to which they are bent while permitting children to easily bend them during the tying of a bow. This enables a child or handicapped person to bend the end portion to the shape required for one step of tying, and to "freeze" the shoelace in that position while he manipulates the other end portion or decides what is the next step to be done.Other References
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