Original Assignee CLAY PRODUCTS ASS Priority date (The priority date is an assumption and is not a legal conclusion. ![]() Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US528334A Inventor George F Keck Current Assignee (The listed assignees may be inaccurate. Google Patents Radiant heating for buildingsÄownload PDF Info Publication number US2422685A US2422685A US528334A US52833444A US2422685A US 2422685 A US2422685 A US 2422685A US 528334 A US528334 A US 528334A US 52833444 A US52833444 A US 52833444A US 2422685 A US2422685 A US 2422685A Authority US United States Prior art keywords tiles header passages units return Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. ![]() Google Patents US2422685A - Radiant heating for buildings US2422685A - Radiant heating for buildings
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