Business/pleasure dart
Patent 5707307 Issued on January 13, 1998. Estimated Expiration Date: 
June 26, 2016. 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.
June 26, 2016. 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 14306 D280110 2604693 3266806 3282253 3750729 3865496 Breakaway dart Multiple use hand tool Combination writing instrument and handcuff locking and unlocking device InventorsApplicationNo. 670584 filed on 06/26/1996US Classes:473/585, And vane structure (i.e., flight guiding or stabilizing means)401/31, Including individual actuators401/195COMBINEDExaminersPrimary: Shapiro, Paul E.Attorney, Agent or FirmForeign Patent References
International ClassA63B 065/02AbstractA combined dart and writing implement, such as a ball point pen. Each are contained within the same housing and movable from a retracted to an extended position. When extended, their tip portion extends through an orifice in the housing. Both the dart and writing implement have springs to retract them and each is moved by pushing a finger operated button.Other References
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