Title:
Heating system
United States Patent 2289735
Inventors:
Lewis, Smith
Publication Date:
07/14/1942
Export Citation:
Click for automatic bibliography generation
Assignee:
Lewis, Smith
Primary Class:
237/67
Other Classes:
165/81, 411/974
International Classes:
F24H9/12; F24H9/12
View Patent Images:
Download PDF 2289735        PDF help