United States Patent 3421760
Inventors:
Freeman Jr., Habern W.
Publication Date:
01/14/1969
Assignee:
Habern Jr., Freeman W.
Michael, Maslan M.
Other Classes:
482/45, 482/130, 601/33, 482/139
International Classes:
A63B21/04; A63B22/16; A63B23/04; A63B21/02; A63B22/00; A63B21/02
US Patent References:
| 2682402 | Collapsible platform and framework exercising apparatus | | | |