This page provided in the interest of knowing what has already been patented regarding WATER ROCKETS. Most of these patents are NOT PUBLIC DOMAIN, but are of PUBLIC RECORD. Federal law prohibits making copies of these patented ideas during the time of patent coverage.
I found some of the patents very interesting reading material. I enjoy the illustrations, the "Background Of The Invention" and the "Summary Of The Invention" sections of the patents.

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LONNIE JOHNSON - Patent # 5,538,453 - Dated Jul 23, 1996 - AIR PRESSURE TOY ROCKET LAUNCHER

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E. J. JOFFE - Patent # 3,049832 - Dated AUG 21, 1962 - TWO STAGE ROCKET

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B. KRINNSKY - Patent # 2,733,699 - Dated FEB 7, 1956 - ROCKET TOY

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LONNIE JOHNSON - Patent # 5,415,153 - Dated May 16, 19965 - PRESSURIZED AIR/WATER ROCKET AND LANCHER

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I'll be adding more....this is mostly a test....any comments?

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