Number | Date | Country | Kind |
---|---|---|---|
3724309 | Jul 1987 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2999405 | Ewart | Sep 1961 | |
3580020 | Bindernagel et al. | May 1971 | |
3731518 | Blocher | May 1973 | |
3795035 | Pogonowski | Mar 1974 | |
3888103 | Renshaw | Jun 1975 | |
4179915 | Huydts | Dec 1979 | |
4199969 | Engel et al. | Apr 1980 | |
4472959 | Fencl | Sep 1984 | |
4667500 | Mechtold et al. | May 1987 |
Number | Date | Country |
---|---|---|
0154030 | Sep 1985 | EPX |
2313787 | Oct 1974 | DEX |
Entry |
---|
Bander, Bleche, Rohre [Bands, Plates, Pipes] 4-1986, pp. 63-64, "Verfahren zum Umformen von Rohren" [Methods for Forming Pipes]. |