The broken lines in the drawings are included for the purpose of illustrating portions of the three-step heavy-duty ladder and form no part of the claimed design.
The broken lines in the drawings are included for the purpose of illustrating portions of the three-step heavy-duty ladder and form no part of the claimed design.
Number | Name | Date | Kind |
---|---|---|---|
2470053 | Salisbury | May 1949 | A |
2485413 | Ross | Oct 1949 | A |
2650014 | Harrison | Aug 1953 | A |
2865546 | Shull | Dec 1958 | A |
2899008 | Larson | Aug 1959 | A |
2957542 | Rizzuto | Oct 1960 | A |
3446310 | Alfie | May 1969 | A |
3625388 | Golden et al. | Dec 1971 | A |
3744591 | Lucci et al. | Jul 1973 | A |
4270463 | Korzon | Jun 1981 | A |
4452484 | Pastor | Jun 1984 | A |
4485892 | Maloney | Dec 1984 | A |
4502564 | Kümmerlin et al. | Mar 1985 | A |
4586586 | Canals | May 1986 | A |
4653713 | Hamilton | Mar 1987 | A |
4936463 | Tiramani | Jun 1990 | A |
4979590 | Bailey | Dec 1990 | A |
5035389 | Wang | Jul 1991 | A |
5052581 | Christ et al. | Oct 1991 | A |
5120013 | Sweeney | Jun 1992 | A |
5240214 | Bimbaum | Aug 1993 | A |
5337857 | Spait | Aug 1994 | A |
5370263 | Brown | Dec 1994 | A |
5421428 | Ingles | Jun 1995 | A |
5573081 | Bartnicki et al. | Nov 1996 | A |
5584357 | Gugel | Dec 1996 | A |
5613574 | Melanson | Mar 1997 | A |
5622010 | Weber | Apr 1997 | A |
5673885 | Pham | Oct 1997 | A |
5722507 | Kain | Mar 1998 | A |
5740883 | Trank | Apr 1998 | A |
5782314 | Zeitler | Jul 1998 | A |
5873433 | Katz | Feb 1999 | A |
5913380 | Gugel | Jun 1999 | A |
5967260 | Spak | Oct 1999 | A |
6012548 | Kim | Jan 2000 | A |
6098748 | Harper, Jr. et al. | Aug 2000 | A |
6347687 | Alim | Feb 2002 | B1 |
6390237 | Kim et al. | May 2002 | B1 |
6390238 | Gibson | May 2002 | B1 |
6401862 | Caron | Jun 2002 | B1 |
6427805 | Gibson | Aug 2002 | B1 |
6443260 | Katz | Sep 2002 | B1 |
6443261 | Gibson | Sep 2002 | B1 |
6467577 | Charlebois, Jr. | Oct 2002 | B1 |
6550579 | Gibson | Apr 2003 | B2 |
6698699 | Bailey | Mar 2004 | B1 |
6883529 | Kvaternik | Apr 2005 | B2 |
6902034 | Gibson et al. | Jun 2005 | B2 |
7000732 | Briggs, Jr. | Feb 2006 | B1 |
7032711 | Katz et al. | Apr 2006 | B1 |
7108103 | Meeker | Sep 2006 | B2 |
7128187 | Simpson | Oct 2006 | B2 |
D541432 | Rapp | Apr 2007 | S |
7204343 | Seaman | Apr 2007 | B1 |
D548364 | Skubic | Aug 2007 | S |
D554771 | Skubic | Nov 2007 | S |
7370726 | Chavez | May 2008 | B1 |
7415933 | Sagol | Aug 2008 | B2 |
7648108 | Peterson | Jan 2010 | B2 |
7861826 | Meyers et al. | Jan 2011 | B2 |
7886872 | Astor | Feb 2011 | B2 |
7931123 | Moldthan | Apr 2011 | B2 |
7967111 | Meyers et al. | Jun 2011 | B2 |
D642283 | Ericksson | Jul 2011 | S |
8186481 | Moss et al. | May 2012 | B2 |
8272478 | Astor | Sep 2012 | B2 |
8453796 | Astor | Jun 2013 | B2 |
8579083 | Astor | Nov 2013 | B2 |
8596454 | Carlson | Dec 2013 | B1 |
8997931 | Parker | Apr 2015 | B2 |
9309718 | Matthew | Apr 2016 | B1 |
9428958 | Ellis | Aug 2016 | B1 |
D766461 | Moss et al. | Sep 2016 | S |
D766462 | Moss et al. | Sep 2016 | S |
D777350 | Moss et al. | Jan 2017 | S |
9714541 | Astor | Jul 2017 | B2 |
9714542 | Harcz | Jul 2017 | B1 |
9850706 | Astor | Dec 2017 | B2 |
D833643 | Foley | Nov 2018 | S |
10138680 | Williams et al. | Nov 2018 | B2 |
D838386 | Woodward | Jan 2019 | S |
10184292 | Latimer | Jan 2019 | B2 |
10208538 | Astor | Feb 2019 | B2 |
10619416 | Snell | Apr 2020 | B1 |
10633918 | Wulfekotte | Apr 2020 | B2 |
10648234 | Skubic | May 2020 | B2 |
D889689 | Russell | Jul 2020 | S |
10709238 | Thompson | Jul 2020 | B1 |
D898944 | Green | Oct 2020 | S |
10801263 | Dangrow | Oct 2020 | B2 |
D920541 | Mittanck | May 2021 | S |
D921224 | Mittanck | Jun 2021 | S |
11167407 | McGee | Nov 2021 | B2 |
11220862 | Skubic et al. | Jan 2022 | B2 |
D972169 | Yan | Dec 2022 | S |
11655676 | Foley | May 2023 | B2 |
20020017430 | Rosko | Feb 2002 | A1 |
20020017431 | Gibson | Feb 2002 | A1 |
20020104709 | Hines | Aug 2002 | A1 |
20030029676 | Gibson | Feb 2003 | A1 |
20040000449 | Meeker | Jan 2004 | A1 |
20040007424 | Simpson | Jan 2004 | A1 |
20060006024 | Till | Jan 2006 | A1 |
20070120028 | Kane | May 2007 | A1 |
20070163837 | Dyer | Jul 2007 | A1 |
20070181369 | Gibson | Aug 2007 | A1 |
20070193829 | Aster | Aug 2007 | A1 |
20070240935 | O'Brien | Oct 2007 | A1 |
20070284191 | Astor | Dec 2007 | A1 |
20070284192 | Meyers | Dec 2007 | A1 |
20090078504 | Astor | Mar 2009 | A1 |
20090272602 | Kocher | Nov 2009 | A1 |
20100224445 | Moss et al. | Sep 2010 | A1 |
20110024234 | Lin | Feb 2011 | A1 |
20120211305 | Moss et al. | Aug 2012 | A1 |
20120217093 | Latimer | Aug 2012 | A1 |
20120228059 | Lampe et al. | Sep 2012 | A1 |
20130146394 | Astor | Jun 2013 | A1 |
20130270037 | Pensieri | Oct 2013 | A1 |
20140054112 | Astor | Feb 2014 | A1 |
20140224585 | Russell | Aug 2014 | A1 |
20140326538 | Najey | Nov 2014 | A1 |
20140332316 | Tiber et al. | Nov 2014 | A1 |
20150014094 | Brooks | Jan 2015 | A1 |
20150090533 | Moss et al. | Apr 2015 | A1 |
20150159434 | Leng | Jun 2015 | A1 |
20160024845 | Coe | Jan 2016 | A1 |
20160038789 | Cheyne | Feb 2016 | A1 |
20160177626 | Miller | Jun 2016 | A1 |
20160348434 | Williams | Dec 2016 | A1 |
20170251826 | Sclare | Sep 2017 | A1 |
20170328131 | Woodward et al. | Nov 2017 | A1 |
20200170419 | Sclare et al. | Jun 2020 | A1 |
20200270946 | Lawery | Aug 2020 | A1 |
20210037989 | Rogers | Feb 2021 | A1 |
20230119062 | Zhu | Apr 2023 | A1 |
Number | Date | Country |
---|---|---|
2007101150 | Jan 2008 | AU |
2777593 | Oct 1999 | FR |
2816984 | May 2002 | FR |
WO 2010084135 | Jul 2010 | WO |
Entry |
---|
Polder® 3-Step Ladder. Crate and Barrel, http://www.crateandbarrel.com/polder-3-step-ladder/s451498, accessed May 6, 2015. |
Cosco Signature Series 6 ft. Premium Aluminum Step Ladder, Home Depot, http://www.homedepot.com/p/Cosco-Signature-Series-6-ft-Premium-Aluminum-Step-Ladder-2061AABLD/203642157, accessed May 6, 2015. |
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-with-375-lb-Load-Capacity-Type-IAA-Duty-Rating-P7404/203134335, accessed May 6, 2015. |
Application and File History for U.S. Appl. No. 14/617,441, filed Feb. 9, 2015. Inventors: Jeff Skubic et al. |
Application and File History for U.S. Appl. No. 16/834,561, filed Mar. 30, 2020. Inventors: Jeff Skubic et al. |