United States Patent 3037593
Inventors:
Webster, Clifford L.
Publication Date:
06/05/1962
Assignee:
Webster, Clifford L.
Other Classes:
52/773, 52/775, 52/798.100, 52/578, 52/284, 403/381, 160/135, 52/800.120, 256/24
International Classes:
E04B2/74; E04B2/76