Number | Date | Country | Kind |
---|---|---|---|
3543874 | Dec 1985 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1972207 | Tucker | Sep 1934 | |
2141569 | Tucker et al. | Dec 1938 | |
2390138 | Vallandigham | Dec 1945 | |
2478831 | MacPerson | Aug 1949 | |
3359225 | Weisand | Dec 1967 | |
3537869 | Proell | Nov 1970 | |
4337094 | Tokar | Jun 1982 |
Number | Date | Country |
---|---|---|
1282533 | Nov 1968 | DEX |
2703182 | Jul 1978 | DEX |
1184834 | Oct 1985 | SUX |
Entry |
---|
Betonwerk & Fertigteil-Technik, Heft; Aug. 1972, pp. 571, 577. |