Number | Date | Country | Kind |
---|---|---|---|
63-102072[U] | Aug 1988 | JPX | |
63-104559[U] | Aug 1988 | JPX |
Filing Document | Filing Date | Country | Kind | 102e Date | 371c Date |
---|---|---|---|---|---|
PCT/JP89/00798 | 8/2/1989 | 5/29/1990 | 5/29/1990 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO90/01588 | 2/22/1990 |
Number | Name | Date | Kind |
---|---|---|---|
3630121 | Lund et al. | Dec 1971 | |
3796336 | Ratliff | Mar 1974 | |
4463658 | Heiser et al. | Aug 1984 | |
4469007 | Melocik | Sep 1984 | |
4729222 | Tanaka et al. | Mar 1988 |
Number | Date | Country |
---|---|---|
0331076 | Sep 1989 | EPX |
61-35959 | Mar 1986 | JPX |
61-60931 | Mar 1986 | JPX |
61-68161 | May 1986 | JPX |
61-294031 | Dec 1986 | JPX |
62-88805 | Apr 1987 | JPX |
Entry |
---|
Patent Abstracts of Japan, vol. 10, No. 130 (M-478) [2187], 14th May 1986; JP-A-60 256 605 (Hitachi Kenki K.K.) 18 Dec. 1985. |
Patent Abstracts of Japan, vol. 10, No. 353 (M-539) [2409], 28th Nov. 1986; & JP-A-61 151 341 (Hitachi Constr. Mach. Co., Ltd) 10 Jul. 1986. |