Number | Date | Country | Kind |
---|---|---|---|
3-000469 | Jan 1991 | JPX | |
3-005380 | Jan 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4031558 | Kusaka | Jun 1977 | |
4117519 | Shioyama et al. | Sep 1978 | |
4875110 | Kazama et al. | Oct 1989 |
Number | Date | Country |
---|---|---|
0336422 | Apr 1989 | EPX |
2369646 | May 1978 | FRX |
59-178601 | Oct 1984 | JPX |
63159941 | Jan 1990 | JPX |
63159942 | Jan 1990 | JPX |
63159943 | Jan 1990 | JPX |
63159944 | Jan 1990 | JPX |
Entry |
---|
Patent Abstract of Japan, vol. 13, No. 505 (P-959) (3853) Nov. 14, 1989 "Revolving Head Device" Hitachi Ltd. |
Patent Abstract of Japan vol. 14, No. 419 (P-1103) (4362) Sep. 10, 1990 "Rotary Head Device" Matsushita Electric Ind. Co. Ltd. |