Extension Ladder

FIG. 1 is a perspective view of a first embodiment of an extension ladder showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof,

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of portion 9 shown in FIG. 1 ;

FIG. 10 is an enlarged view of portion 10 shown in FIG. 2 ;

FIG. 11 is an enlarged view of portion 11 shown in FIG. 2 ;

FIG. 12 is a perspective view of a second embodiment of the extension ladder;

FIG. 13 is another perspective view thereof;

FIG. 14 is a front elevational view thereof;

FIG. 15 is a rear elevational view thereof;

FIG. 16 is a left side elevational view thereof;

FIG. 17 is a right side elevational view thereof;

FIG. 18 is a top plan view thereof;

FIG. 19 is a bottom plan view thereof;

FIG. 20 is an enlarged view of portion 20 shown in FIG. 12 ;

FIG. 21 is an enlarged view of portion 21 shown in FIG. 13 ; and,

FIG. 22 is an enlarged view of portion 22 shown in FIG. 13 .

The dash-dash broken lines in the drawings depict portions of the extension ladder that form no part of the claimed design. The dot-dash broken lines in FIGS. 1 - 2 , 9 - 13 , and 20 - 22 represent boundaries of the enlarged portions and form no part of the claimed design.