|
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.
Bell, Randall, Herbst, Walter, Horne, Eric C., Heald, Edward E.
Patent | Priority | Assignee | Title |
6347687, | Sep 16 1999 | PT INDAL ALUMINUM INDUSTRY TBK | Compact collapsible step ladder |
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 |
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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