Ventilators
United States Patent 3230859
US Patent References:
/2733918.html
- - 2733918

Roof hatch
- - 2766859


Inventors:
Jerome, O'hea
Douglas, Rampley Kenneth
Michael, Cowtan Brian
Publication Date:
01/25/1966
View Patent Images:
Download PDF 3230859 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Colt, Ventilation And Heating L.
Primary Class:
454/357
Other Classes:
454/363, 49/3, 454/364, 52/1
International Classes:
E04D13/035; E05F1/00; F24F7/02; E05F15/04; E04D13/03; E05F15/00