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| US4858725 | 11 Oct 1988 | 22 Ago 1989 | | Ladder brace |
| US4867532 | 12 Jun 1987 | 19 Sep 1989 | British Telecommunications Public Limited Company | Wavelength selection device having a diffraction grating mounted on a torsion member |
| US4877108 | 11 Oct 1988 | 31 Oct 1989 | | Hydraulic ladder brace |
| US4909352 | 26 Jun 1989 | 20 Mar 1990 | | Ladder support system |
| US4923050 | 17 Ago 1989 | 8 May 1990 | | Ladder support |
| US5024500 | 2 Dic 1988 | 18 Jun 1991 | British Telecommunications public limited company | Cantilever beam radiation deflector assembly |
| US5469933 | 1 Sep 1994 | 28 Nov 1995 | | Vehicle mounted ladder |
| US5518357 | 13 Jul 1994 | 21 May 1996 | Theodore Ziaylek, Jr.
Michael P. Ziaylek | Retaining and retrieval apparatus for storage of a ladder upon a vehicle shelf area |
| US5791857 | 24 Oct 1996 | 11 Ago 1998 | Theodore Ziaylek, Jr.
Michael Paul Ziaylek | Automatic ladder lowering and storage device for use with an emergency vehicle |
| US6250425 | 18 Nov 1999 | 26 Jun 2001 | | Ladder support rack |
| US6357548 | 19 Abr 2000 | 19 Mar 2002 | | Ladder support device |
| US6820723 | 7 Nov 2002 | 23 Nov 2004 | | Adapter for connection between vehicle and ladder |
| US6827541 | 15 Abr 2003 | 7 Dic 2004 | | Apparatus for holding elongated objects horizontally adjacent to a vehicular body which is movable between an upper storage position and a lower access position |
| US6902033 | 18 Oct 2002 | 7 Jun 2005 | | Portable folding observation tower for attachment to a vehicle |
| US7137479 | 8 Oct 2004 | 21 Nov 2006 | Michael P. Ziaylek
Theodore Ziaylek, Jr.
Theodore P. Ziaylek | Powered ladder storage apparatus for an emergency vehicle |
| US7168521 | 3 Sep 2004 | 30 Ene 2007 | | Tree stand ladder hitch assembly |
| US7913885 | 6 Sep 2005 | 29 Mar 2011 | | Stowable apparatus for securing an extension ladder to a pickup truck |
| US7992682 | 21 Dic 2007 | 9 Ago 2011 | | Ladder storing apparatus for use with an emergency vehicle |
| USD313527 | 29 Abr 1988 | 8 Ene 1991 | Weyerhaeuser Company | Infant seat liner |
