Spaced wall combustion apparatus
United States Patent 2746249
Inventors:
Bichowsky, Francis R.
Canfield, Robert H.
Publication Date:
05/22/1956
Assignee:
Bichowsky, Francis R.
Canfield, Robert H.
Other Classes:
60/39.480, 60/39.530
International Classes:
F42B19/22; F42B19/00