This is a reproduction of the original Patent for a Toy Helicopter.
It was invented by Ib Berggreen and filed on November 24, 1992. It was issued on March 29, 1994 by the United States Patent and Trademark Office.
Building Block Toy Helicopter Patent Print Old Look (8.5" x 11") M11756
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- SKU:
- ZYB912345
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- New
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