Number | Date | Country | Kind |
---|---|---|---|
1-70421 | Mar 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2625980 | Castricum | Jan 1953 | |
2976910 | Nowak | Mar 1961 | |
3296061 | Tavenor et al. | Jan 1967 |
Number | Date | Country |
---|---|---|
2072575 | Apr 1980 | GBX |
Entry |
---|
Database WPI, abs. No. 79-91854b, Derwent Publications Ltd., London, GB; & JP-A-54144485 (Ohij Gum Kasei KK) Oct. 11, 1979, Abstract only. |
Database WPIL, abs. No. 84-084531, Derwent Publications Ltd., London, GB; & JP-A-59033375 (Mitsuboshi Belting KK) Feb. 23, 1984, Abstract only. |
Database WPI, abs, No. 74-53105v. Derwent Publications Ltd., London, GB; & JP-B-49024972 (Mitsuboshi Belting LTD.) Jun. 26, 1974, Abstract only. |