Number | Name | Date | Kind |
---|---|---|---|
D255642 | Erpenbeck et al. | Jul 1980 | |
D288167 | Urspruch | Feb 1987 | |
3798765 | Mattsson | Mar 1974 | |
4628779 | Louis | Dec 1986 | |
4739682 | Birkenstrand | Apr 1988 | |
4825543 | Thalmann et al. | May 1989 | |
4845850 | Rothenberger | Jul 1989 |
Entry |
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Portable bit sharpener #23929, Leichtung Work Shops Catalog, Summer 1991, p. 12. |