Title:
Ladder structure
Document Type and Number:
United States Patent 2598278
Inventors:
Mason, William T.
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Sponsored by: Flash of Genius |
Publication Date:
05/27/1952
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Referenced by:
Export Citation:
Assignee:
LOUISVILLE METAL PRODUCTS COMP
Primary Class:
Other Classes:
403/194, 285/19, 403/167, 285/203, 182/210, 29/897
International Classes:
E06C1/12; E06C1/00
US Patent References:
Foreign References:
| AU100807B | ||||
| DE579252C |