Step ladder

Description

FIG. 1 is a front perspective view of a step ladder.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a right side elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a rear perspective view thereof.

The dashed broken lines in the drawings depict portions of the step ladder that form no part of the claimed design.

Claims

CLAIM We claim the ornamental design for step ladder, as shown and described.

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Inventors:	Skubic; Jeff D. (Eden Prairie, MN), Simpson; Dennis D. (Plymouth, MN), Williams; Benjamin P. (Chaska, MN), Lu; Yongxue (Shanghai, CN)
Applicant:	Name City State Country Type Tricam Industries, Inc. Eden Prairie MN US
Assignee:	Tricam Industries, Inc. (Eden Prairie, MN)
Appl. No.:	D/633,324
Filed:	January 12, 2018

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Related U.S. Patent Documents

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	Application Number	Filing Date	Patent Number	Issue Date
	14617441	Feb 9, 2015

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Current U.S. Class:	D25/64
Current International Class:	2504
Field of Search:	;D25/62-65,68,69 ;182/121,23,172,125,116,122,102,96,28,27,46,20,22,26,228.2,222,33,129,200,156,127,120,228.3,104,168,206,13,33.3,201,106,24,25,29,117,216,124,163,161,165,180.1,170

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References Cited [Referenced By]

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U.S. Patent Documents

2470053	May 1949	Salisbury
2650014	August 1953	Harrison
2899008	August 1959	Larson
3446310	May 1969	Alfie
4270463	June 1981	Korzon
6012548	January 2000	Kim
6347687	February 2002	Alim
6390238	May 2002	Gibson et al.
6427805	August 2002	Gibson et al.
6550579	April 2003	Gibson et al.
7108103	September 2006	Meeker
7204343	April 2007	Seaman
D548364	August 2007	Skubic
D554771	November 2007	Skubic et al.
7861826	January 2011	Meyers et al.
8997931	April 2015	Parker et al.
D766461	September 2016	Moss
D766462	September 2016	Moss
D777350	January 2017	Moss
2002/0017431	February 2002	Gibson et al.
2004/0000449	January 2004	Meeker
2004/0007424	January 2004	Simpson
2007/0181369	August 2007	Gibson et al.
2007/0284192	December 2007	Meyers et al.
2011/0024234	February 2011	Lin
2014/1022458	August 2014	Russell et al.
2014/0332316	November 2014	Tiber
2015/0090533	April 2015	Moss
2015/0159434	June 2015	Leng
2015/0308190	October 2015	Skubic et al.

Foreign Patent Documents

	2007101150		Jan 2008		AU
	2777593		Oct 1999		FR
	2816984		May 2002		FR
	WO 2010/084135		Jul 2010		WO

Other References

Polder.RTM. 3-Step Ladder. Crate and Barrel, http://www.crateandbarrel.com/polder-3-step-ladder/s451498, accessed May 6, 2015. cited by applicant . Cosco Signature Series 6 ft. Premium Aluminum Step Ladder, Home Depot, http://www.homedepot.com/p/Cosco-Signature-Series-6-ft-Premium-Aluminum-S- tep-Ladder-2061AABLD/203642157, accessed May 6, 2015. cited by applicant . Werner 4 ft. Fiberglass Platform Step Ladder with 375 lb. Load Capacity Type IAA Duty Rating. Home Depot, http://www.homedepot.com/p/Werner-4-ft-Fiberglass-Platform-Step-Ladder-wi- th-375-lb-Load-Capacity-Type-IAA-Duty-Rating-P7404/203134335, accessed May 6, 2015. cited by applicant . Application and File History from U.S. Appl. No. 14/617,441, filed Feb. 9, 2015, inventors Skubic et al. cited by applicant.

Primary Examiner: Ramirez; Cynthia
Assistant Examiner: Colan; Gino
Attorney, Agent or Firm: Patterson Thuente Pedersen, P.A.

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