| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 285/333 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 597,000 | Jan. 11, 1898 | C.A. Higbee | Pipe coupling | |
 | 946,919 | Jan. 18, 1910 | A.A. Koch | Corrugated culvert and process of producing same | |
| 1,253,149 | Jan. 08, 1918 | W. Childers | Drilling Tool Joint | ||
 | 1,287,203 | Dec. 10, 1918 | A.M. Saunders, P. Boyd | Drill Tube Section | |