| Number | Name | Date | Kind |
|---|---|---|---|
| D163760 | Lustig | Jun 1951 | |
| 2532823 | Schumann | Dec 1950 | |
| 3873863 | Pew | Mar 1975 |
| Entry |
|---|
| Jensen Tools Catalog; Fall 1975; pp. 76, 77; Dremel Power Tools, Models 260 and 370/380. |
| Black and Decker Power Tools & Accessories Catalog; .COPYRGT.1985; p. 255; second panel; detailing tool #9806. |