Filing Document | Filing Date | Country | Kind | 102e Date | 371c Date |
---|---|---|---|---|---|
PCT/EP91/00814 | 4/29/1991 | 11/6/1992 | 11/6/1992 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO91/18185 | 11/28/1991 |
Number | Name | Date | Kind |
---|---|---|---|
1806792 | Degenhardt et al. | May 1931 | |
3695717 | Birrer | Oct 1972 | |
3814481 | Montacie | Jun 1974 | |
4248481 | Stoltefuss | Feb 1981 | |
4805963 | Kogler et al. | Feb 1989 |
Number | Date | Country |
---|---|---|
2108444 | Sep 1972 | DEX |
7801600 | May 1978 | DEX |
3140707 | Apr 1983 | DEX |
8717189 | May 1988 | DEX |
2241687 | Mar 1975 | FRX |
Entry |
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Handbook of Mining and Tunnelling Machinery by B. Stock, pp. 285-293, 1982. |