An RC car returns Javelins to the Olympic athletes!

Here is a patent for a whistling javelin, that can generate beautiful whistle sound during flying. This provides entertainment and also improves the safety performance.

Patent Information
Publication number: CN103028235 A
Patent Title: Whistle javelin
Application number: CN 201210543438
Publication date: 10 Apr 2013
Filing date: 16 Dec 2012
Priority date: 16 Dec 2012
Inventors: ZHENG FUJIAN
Applicant: ZHENG FUJIAN

CN103028235A