The broken lines shown in the figures are included for the purpose of illustrating portions of ladder and form no part of the claimed design.
The broken lines shown in the figures are included for the purpose of illustrating portions of ladder and form no part of the claimed design.
Number | Name | Date | Kind |
---|---|---|---|
1494692 | Lohlker | May 1924 | A |
1536434 | Hearn | May 1925 | A |
5154255 | Kiska | Oct 1992 | A |
D341664 | Newkirk | Nov 1993 | S |
5370203 | Kiska | Dec 1994 | A |
6745870 | Smith | Jun 2004 | B2 |
D506270 | Rieger | Jun 2005 | S |
7837010 | Astor | Nov 2010 | B2 |
10017989 | Kellogg | Jul 2018 | B1 |