| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1970-12-15 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 3,546,759 | Dec. 15, 1970 | F. Sirola | Cutting tool | lathe tool holders and tool posts | |
| 3,547,505 | Dec. 15, 1970 | D.E. Ott, A.W. Carlson | Biological service center | ||
| 3,547,800 | Dec. 15, 1970 | P. Pan | Apparatus and Method for Purifying Waste Waters | sewage treatment apparatus | |