|
| US4323260 | 10 Sep 1979 | 6 Apr 1982 | | Folding chair and cart |
| US4557470 | 10 Nov 1983 | 10 Dec 1985 | Wilhelm Link GmbH & Co. KG | Gas pressure spring with a safety device |
| US4793611 | 10 Sep 1986 | 27 Dec 1988 | Spang & Company | Adjustable height toy basketball goal |
| US6272755 | 24 May 1999 | 14 Aug 2001 | Alterra Holdings Corporation | Extendable tool lock |
| US7344117 | 30 Dec 2005 | 18 Mar 2008 | Benq Corporation | Adjustable lift support apparatus |
| US8210577 | 22 Aug 2003 | 3 Jul 2012 | Echo, Incorporated | Connecting system for telescopingly engaged elements and method of maintaining the elements together using the system |
