10 Patents on Well Known Firecrackers and Fireworks

1. CN2203772Y (1995) – Sound fireworks with whistle sound 2. CN2089609U (1991) – Rocket type two sound firecracker 3. US4779534A (1987) – Rocket firecrackers giving out smoke before flying up 4. CN2110849U (1991) – SEAT TYPE CONIC FIREWORKS AND FIRECRACKERS…

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