Number | Name | Date | Kind |
---|---|---|---|
2606925 | Whitman | Aug 1952 | |
3155724 | Arthur | Nov 1964 | |
3789032 | Hoeschele | Jan 1974 |
Number | Date | Country |
---|---|---|
971184 | Jul 1975 | CAX |
443139 | Feb 1991 | EPX |
1127338 | Sep 1968 | GBX |
1220715 | Jan 1971 | GBX |
Entry |
---|
Derwent Publications Ltd., JP-A-53 046 945, (Mitsui Toatsu), Apr. 27, 1978, Abstract only. |