Extension attachment for guttering downspouts
United States Patent 3316928

Inventors:
Weakley, Richard A.
Publication Date:
05/02/1967
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Assignee:
Weakley, Richard A.
Primary Class:
137/119.060
Other Classes:
137/615, 137/801
International Classes:
E04D13/08; E04D13/04
Other References:
None