Title:
Heating furnace
United States Patent 1491169


Inventors:
Root, Charles H.
Application Number:
US56281622A
Publication Date:
04/22/1924
Filing Date:
05/22/1922
Assignee:
Root, Charles H.
Primary Class:
Other Classes:
221/175, 414/150
International Classes:
B21J17/00
View Patent Images: