United States Patent 1649506
Inventors:
Brewer, Charles A.
Publication Date:
11/15/1927
Assignee:
CANNON ENGINEERING CO
Other Classes:
126/271.100, 219/258, 236/DIG.012, 219/253, 236/7, 38/82, 219/530, 38/93
International Classes:
D06F75/12; D06F75/24; D06F75/26; D06F75/08