Patent 3540867 - 3540867
| United States Patent | Patent Number 3,540,867 |
| Issue Date: | Issued November 17, 1970 |
| Current U.S. Class: | 48/197R - 252/373 - 423/220 - 48/206 |
| Current International Class: | C01B03/38 (20060101) C01B03/00 (20060101) C10J03/68 (20060101) C10K03/00 (20060101) C10K03/02 (20060101) C10J03/00 (20060101) C10B049/00 (20060101) C10B049/02 (20060101) |
| Current CPC Class: | C01B 3/386 (20130101); C10B 49/02 (20130101); C10J 1/207 (20130101); C10K 3/02 (20130101) |
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