United States Patent 3371927
Inventors:
Ryan, John W.
Dale, Kabot Warren
Publication Date:
03/05/1968
Other Classes:
280/1.182, 280/1.130, 267/160, 267/153
International Classes:
A63B25/08; A63B25/00
US Patent References:
| 3328028 | Rider-operated spring-mounted jumping toy | | | |