Fireplace construction
United States Patent 2821975
US Patent References:
/0289634.html
- - 0289634

/0329224.html
- - 0329224

/0411459.html
- - 0411459

/0474655.html
- - 0474655

/0718603.html
- - 0718603


Inventors:
Thulman, Robert K.
Publication Date:
02/04/1958
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Assignee:
Thulman, Robert K.
Primary Class:
126/500
Other Classes:
126/531
International Classes:
F24B1/18; F24B1/188; F24B1/19; F24B1/00
US Patent References:
0926910
0976039
1588587Heating apparatus
2361643
2642859Fireplace heating system
2703567Fireplace stove
Foreign References:
GB190312364A
GB565194A