Number | Name | Date | Kind |
---|---|---|---|
1809188 | Barnes | Jun 1931 | |
1856846 | Duncan | May 1932 | |
3712175 | Muller et al. | Jan 1973 | |
3874809 | Hahn et al. | Apr 1975 | |
3940970 | Terral et al. | Mar 1976 | |
4118141 | Spohn, Jr. | Oct 1978 | |
4209273 | Lehnen | Jun 1980 | |
5014793 | Germanton et al. | May 1991 | |
5401124 | Hettich | Mar 1995 | |
5634748 | Brazell et al. | Jun 1997 |
Entry |
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Walden International Machinery Corporation, (Author). |
Walden's Flexible Arm Drilling Machine (Title) Two pages, Date unknown. |