Referenced by|
| US3960382 | Sep 8, 1975 | Jun 1, 1976 | Lawrence Peska Associates, Inc. | Ski pole with retractable point | | US5782256 | May 3, 1996 | Jul 21, 1998 | | Contoured foot for ambulatory aid | | US6216414 | Mar 1, 1999 | Apr 17, 2001 | Valmont-Lexington Corp | Hinge base construction for light poles | | US6217073 | Sep 16, 1998 | Apr 17, 2001 | | Collapsible snow pole | | US6345843 | Jun 28, 2000 | Feb 12, 2002 | | Snow board with collapsible ski poles and holders for same | | US7172219 | Oct 1, 2004 | Feb 6, 2007 | Sparker International, Inc. | Snowboard utility pole |
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