Number | Name | Date | Kind |
---|---|---|---|
RE18144 | Heirmann | Aug 1931 | E |
3690728 | Krekeler | Sep 1972 | A |
3752515 | Oaks et al. | Aug 1973 | A |
3952433 | Heinold et al. | Apr 1976 | A |
3957307 | Varda | May 1976 | A |
4247147 | Rettkowski | Jan 1981 | A |
4404760 | Hahn et al. | Sep 1983 | A |
4505058 | Peterson | Mar 1985 | A |
4650254 | Wechner | Mar 1987 | A |
4684176 | Den Besten et al. | Aug 1987 | A |
4733987 | Tomlinson et al. | Mar 1988 | A |
4763956 | Emmerich | Aug 1988 | A |
4883129 | Lonn et al. | Nov 1989 | A |
5011229 | O'Neil et al. | Apr 1991 | A |
5529384 | Ojanen et al. | Jun 1996 | A |
5690393 | Massa et al. | Nov 1997 | A |
5720528 | Ritchey | Feb 1998 | A |
6070945 | Ritchey et al. | Jun 2000 | A |
Number | Date | Country |
---|---|---|
2716177 | Oct 1977 | DE |
2 079 350 | Jan 1982 | GB |
172654 | Sep 1995 | PL |
Entry |
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Kennametal, Inc. Brochure entitled “Construction Tools” 1997, p. 1-20. |
Kennametal, Inc. Brochure entitled “Kennametal Mining Products” 1996, p. 11. |
Rotor Clip Company, Inc.'s Catalog and Engineering Manual entitled “Rotor Clip Retaining Rings ” 1985-91. |
Kennametal, Inc. Brochure entitled “Chain and Wheel Trenching Tools” 1999, p. 20. |