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The ornamental design for a step ladder, as shown and described. |
FIG. 1 is perspective view of a first embodiment of the invention;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof, being the mirror of the right side view; and
FIG. 5 is a top view thereof;
FIG. 6 is a perspective view of a second embodiment of the invention;
FIG. 7 is a front view thereof;
FIG. 8 is a rear view thereof;
FIG. 9 is a left side view thereof, being the mirror of the right side view; and
FIG. 10 is a top view thereof; and,
FIG. 11 is a perspective view of a third embodiment of the present invention, the top,left, and rear being substantially consistent with the top, left, and rear of the step ladder of the first embodiment.
Patent | Priority | Assignee | Title |
10844660, | Nov 28 2016 | NEW-TEC INTEGRATION (XIAMEN) CO., LTD. | Folding ladder with armrest |
6347687, | Sep 16 1999 | PT INDAL ALUMINUM INDUSTRY TBK | Compact collapsible step ladder |
D433156, | Jan 08 1999 | DOREL HOME FURNISHINGS, INC | Step stool |
D444574, | Jan 08 1999 | DOREL HOME FURNISHINGS, INC | Step stool |
D467667, | Oct 06 1999 | PT INDAL ALUMINUM INDUSTRY TBK | Portion of step ladder |
D564674, | Jan 12 2007 | 1244311 B C LTD | Step stool |
D564675, | Jan 12 2007 | 1244311 B C LTD | Step stool |
D564676, | Mar 02 2007 | 1244311 B C LTD | Step stool with tray |
D564677, | Mar 02 2007 | 1244311 B C LTD | Step stool tray |
D710031, | Nov 15 2012 | TRICAM INDUSTRIES, INC | Step stool |
D855833, | Jan 04 2017 | TRICAM INDUSTRIES, INC | Ladder rail |
D860476, | Jan 04 2017 | TRICAM INDUSTRIES, INC | Hinge for a multi-position ladder |
D903905, | Jun 25 2018 | NEW-TEC INTEGRATION (XIAMEN) CO., LTD. | Folding ladder |
ER4284, | |||
ER662, |
Patent | Priority | Assignee | Title |
4205411, | Mar 01 1979 | Shur-Line Manufacturing Co., Inc. | Universal paint tray |
4276955, | May 30 1978 | TEKRON LICENSING B V | Multiple-purpose work unit |
4485892, | Jul 26 1983 | Cosco, Inc.; COSCO, INC | Platform stool |
4557350, | Mar 20 1985 | Folding chair capable of converting into step ladder | |
4653713, | Jul 14 1986 | LADDER CADDY, INC , 12019 GOODMAN, OVERLAND PARK, KS , 66213, A CORP OF KS ; LADDER CADDY, L P , 12019 GOODMAN, OVERLAND PARK, KS , 66213, A LIMITED PARTNERSHIP OF KS | Ladder top tool tray mounting |
4706918, | May 01 1987 | WILSON TRADE LIMITED | Ladder accessory |
4730802, | Aug 26 1987 | Detachable tray for stepladders | |
4979590, | Jan 11 1989 | BAILEY ALUMINUM PRODUCTS PTY LTD | Ladder platform |
5370263, | Feb 20 1992 | Harry L., Brown; Lyle L., Tatroe | Ladder caddy |
5421429, | May 04 1994 | Ladder with safety feet | |
5542535, | Aug 09 1995 | Square Peg Enterprises, Inc. | Fluorescent lamp carrier and fluorescent lamp disposal apparatus |
5542553, | Dec 14 1994 | Ladder caddy | |
236244, | |||
GB2093516, | |||
GB2192025, |
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