Title:
SPRING-BIASED JUMPING DEVICE
United States Patent 3427019

Inventors:
Brown, George J.
Publication Date:
02/11/1969
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Assignee:
George, Brown J.
Primary Class:
482/77
Other Classes:
D21/413
International Classes:
A63H11/06; A63H11/00; A63B71/00; A63B5/00




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