Title:
Self-retracting downspout discharge extension
United States Patent 3035779
Inventors:
Convis, Orville P.
Publication Date:
05/22/1962
Assignee:
Convis, Orville P.
Other Classes:
239/522, 239/547, 239/602, 239/588, 239/533.130
International Classes:
E04D13/08; E04D13/04