Stepladder
Description
The features shown in broken lines in the drawings depict environmental subject matter only and form no part of the claimed design.
Claims
The ornamental design for a stepladder, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
| 128073 | June 1872 | Roseborough, Jr. |
| 767257 | August 1904 | Banks |
| 1610596 | December 1926 | Bird |
| 1641906 | September 1927 | Smith |
| 1778898 | October 1930 | Konigsberg |
| 1783616 | December 1930 | Hachmuth |
| 1789317 | January 1931 | McLeish |
| 2316679 | April 1943 | Evans |
| 2391466 | December 1945 | Levin |
| 2478592 | August 1949 | Nyberg |
| 2612335 | September 1952 | Saltzman |
| 2650014 | August 1953 | Harrison |
| 2756952 | July 1956 | Gazley |
| 2794612 | June 1957 | Clifton |
| 2919093 | December 1959 | Mooney |
| 3026962 | March 1962 | Kramer |
| 3248129 | April 1966 | Brown |
| 3269486 | August 1966 | Machen |
| 3313505 | April 1967 | Petrie |
| 3472339 | October 1969 | Herrera |
| 3540549 | November 1970 | Emmons |
| 3967694 | July 6, 1976 | Woolfolk, Sr. |
| 4146010 | March 27, 1979 | Manska |
| 4326687 | April 27, 1982 | Clyburn |
| 4524849 | June 25, 1985 | Riddle |
| 4726349 | February 23, 1988 | Gehrke |
| 4732138 | March 22, 1988 | Vos |
| 4899849 | February 13, 1990 | Levi |
| 5186197 | February 16, 1993 | Lavine |
| 5485978 | January 23, 1996 | Hernandez |
| 5520360 | May 28, 1996 | Wensman |
| 5685391 | November 11, 1997 | Gundlach |
| 6053282 | April 25, 2000 | Morisak |
| 6189529 | February 20, 2001 | Shabazian et al. |
| D452331 | December 18, 2001 | Bohlman |
| 6386320 | May 14, 2002 | Clavel |
| 6668975 | December 30, 2003 | Skipper |
| 6711993 | March 30, 2004 | Robertson |
| 7063006 | June 20, 2006 | Spehle et al. |
| 7207533 | April 24, 2007 | Coleman et al. |
| 7513470 | April 7, 2009 | Lomberk |
| 7581703 | September 1, 2009 | Coleman et al. |
| 7984789 | July 26, 2011 | Michalec |
| 8695762 | April 15, 2014 | Carter et al. |
| 9033105 | May 19, 2015 | Boswell |
| 9151112 | October 6, 2015 | Niemela |
| 20070036640 | February 15, 2007 | Boudreaux |
| 20070256892 | November 8, 2007 | Breedlove, Sr. |
| 20080223658 | September 18, 2008 | Michalec |
| 20110088969 | April 21, 2011 | Payne et al. |
| 20110155886 | June 30, 2011 | Nakaniwa |
| 20120168253 | July 5, 2012 | McMurray |
| 20130153297 | June 20, 2013 | Abney et al. |
| 20150107146 | April 23, 2015 | Chaney |
| 20150345219 | December 3, 2015 | Aoi |
| 1079062 | February 2001 | EP |
| 881547 | April 1943 | FR |
| 62-52700 | April 1987 | JP |
| 7-32198 | June 1995 | JP |
| 3031542 | September 1996 | JP |
| 09-112165 | April 1997 | JP |
| 3111306 | June 2005 | JP |
| 2005-282319 | October 2005 | JP |
- Intemational Search Report and Written Opinion dated Mar. 11, 2014 of International Application No. PCT/JP2014/051998.
Patent History
Patent number: D757959
Type: Grant
Filed: Apr 28, 2015
Date of Patent: May 31, 2016
Inventors: Tokuo Aoi (Kakamigahara), Tazuko Aoi (Kakamigahara)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Gino Colan
Application Number: 29/525,302
Type: Grant
Filed: Apr 28, 2015
Date of Patent: May 31, 2016
Inventors: Tokuo Aoi (Kakamigahara), Tazuko Aoi (Kakamigahara)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Gino Colan
Application Number: 29/525,302
Classifications
Current U.S. Class:
Element Of Attachment (13) (D25/68)