Patent Abstracts of Japan vol. 016, No. 012 (P-1297), Jan. 13, 1992 & JP 03 230338 A (Japan Steel Works Ltd: The) Oct. 14, 1991, *Abstract. |
Patent Abstracts of Japan vol. 014, No. 508 (P-1128), Nov. 7, 1990 & JP 02 210630 A (Japan Steel Works Ltd: The) Aug. 22, 1990 *Abstract. |
Patent Abstracts of Japan vol. 010, No. 254 (P-492), Aug. 30, 1986, & JP 61 080534 A (Toshiba Corp) Apr. 24, 1986 *Abstract. |
Patent Abstracts of Japan vol. 013, No. 543 (P-970), Dec. 6, 1989 & JP 01 224942 A (Fuji Electric Co Ltd), Sep. 7, 1989 *Abstract. |
Patent Abstracts of Japan, vol. 011, No. 230 (P-599), Jul. 28, 1987 & JP 62 042347 A (Sanyo Electric Co., Ltd.), Feb. 24, 1987, *Abstract. |