In the drawings, the claimed design is defined by the shaded surfaces; broken lines immediately adjacent shaded surfaces represent boundaries of the claim and form no part thereof. The broken lines showing a portion of the ladder in
In the drawings, the claimed design is defined by the shaded surfaces; broken lines immediately adjacent shaded surfaces represent boundaries of the claim and form no part thereof. The broken lines showing a portion of the ladder in
| Number | Name | Date | Kind |
|---|---|---|---|
| 2265735 | Lambert | Dec 1941 | A |
| 2876047 | Plante | Mar 1959 | A |
| 3804200 | Sandberg | Apr 1974 | A |
| 4002223 | Bernkrant | Jan 1977 | A |
| 4935638 | Straka | Jun 1990 | A |
| D331219 | Barbour et al. | Nov 1992 | S |
| 5645140 | Mouneimneh | Jul 1997 | A |
| 6588782 | Coomber | Jul 2003 | B2 |
| 6619428 | Ellis | Sep 2003 | B2 |
| 7168721 | Mulder | Jan 2007 | B2 |
| 7182175 | Schmitt et al. | Feb 2007 | B1 |
| 7334807 | Mulder | Feb 2008 | B2 |
| D621961 | Gardner | Aug 2010 | S |
| 7819412 | McPherson | Oct 2010 | B2 |
| 8002299 | Huang-Tsai | Aug 2011 | B2 |
| D701484 | Vaughn | Mar 2014 | S |
| 8850757 | Gardner | Oct 2014 | B2 |
| 9067647 | Neese | Jun 2015 | B2 |
| 20050263974 | Mulder | Dec 2005 | A1 |
| 20060272895 | Lavoie | Dec 2006 | A1 |
| Entry |
|---|
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