United States Patent 1417000
Inventors:
Christian, Vogt Henric
Vincent, Boby William
David, Lancaster Sidney
Publication Date:
05/23/1922
Assignee:
Christian, Vogt Henric
Vincent, Boby William
David, Lancaster Sidney
Other Classes:
416/139, 416/151, 416/132B, 416/165
International Classes:
F03D1/06; F03D1/00