Patent 2774743 - 2774743
| United States Patent | Patent Number 2,774,743 |
| Issue Date: | Issued December 18, 1956 |
| Current U.S. Class: | 502/8 |
| Current International Class: | B01J023/40 (20060101) B01J023/42 (20060101) B01J021/00 (20060101) B01J021/04 (20060101) |
| Current CPC Class: | B01J 23/40 (20130101); B01J 23/42 (20130101); B01J 21/04 (20130101) |
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