| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Frederic Schoff | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 397,311 | Feb. 05, 1889 | F. Schoff | Drilling-machine | |
 | 420,284 | Jan. 28, 1890 | F. Schoff | Universal Joint Coupling | |
 | 428,023 | May 13, 1890 | F. Schoff | Casing for flexible shafts | |
 | 437,459 | Sep. 30, 1890 | F. Schoff | Portable reaming and tapping tool | |
 | 439,567 | Oct. 28, 1890 | F. Schoff | Corner Drill Press | |
 | 441,509 | Nov. 25, 1890 | F. Schoff | Drill-support | |