LADDER JACKS
United States Patent 3459277
US Patent References:
/1004284.html
- - 1004284

/1187437.html
- - 1187437

Prop attachment for ladders
- - 2592006

Adjustable ladder for washing windows
- - 2720354

Stand-off ladder bracket
- - 3072218


Inventors:
Frederick, Ezra F.
Publication Date:
08/05/1969
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Assignee:
Ezra, Frederick F.
Primary Class:
182/214
Other Classes:
248/235
International Classes:
E06C7/48; E06C7/00; E06C7/06
US Patent References:
3288249Gutter bridging ladder attachment




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