![]() |
|||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
|
|
| US Patent: 170 | |||||||||||||||||||||||||
| Improvement in concentrating-furnaces for smelting iron ores by the use of anthracite coal in which other kinds of fuel can be used | |||||||||||||||||||||||||
|
Google Patents Report data errors or omissions to steward Jeff Joslin |
||||||||||||||||||||||||