Title:
RETRACTABLE EXTENSION FOR FIXED LADDERS
United States Patent 3455414
US Patent References:
/0421914.html
- - 0421914
Safety rail attachment for stepladders
- - 2640641
Safety stepladder
- - 3288247
Boat ladder
- - 3305045
/0421914.html
- - 0421914
Safety rail attachment for stepladders
- - 2640641
Safety stepladder
- - 3288247
Boat ladder
- - 3305045
Inventors:
Higgins, Joseph J.
Publication Date:
07/15/1969
View Patent Images:
Export Citation:
Assignee:
Joseph, Higgins J.
Primary Class:
International Classes:
E06C7/18; E06C9/02; E06C7/00; E06C9/00; E06C7/18
Foreign References:
| GB205412A |