Method of making integral external and internal finned tubing
United States Patent 2463997
Inventors:
Rodgers, James S.
Publication Date:
03/08/1949
Assignee:
Calumet, And Hecla Cons Copper
Other Classes:
415/177, 29/890.049, 165/179, 159/28.500, 165/184, 29/DIG.047, 29/890.048
International Classes:
B21C37/20; B21C37/15
Foreign References:
| GB188200846A | | | | |
| AU111528B | | | | |
| DE531503C | | | | |