United States Patent 2546078
Inventors:
Sugden, Rogallo Gertrude
Melvin, Rogallo Francis
Publication Date:
03/20/1951
Assignee:
Sugden, Rogallo Gertrude
Melvin, Rogallo Francis
Other Classes:
342/5, 244/902, 244/16
International Classes:
B64C31/06; B64C31/00