Number | Name | Date | Kind |
---|---|---|---|
4098784 | Swidler et al. | Jul 1978 | |
4111648 | McConnell et al. | Sep 1978 | |
4134722 | Swidler et al. | Jan 1979 | |
4150020 | Swidler et al. | Apr 1979 | |
4171954 | McConnell et al. | Oct 1979 |
Number | Date | Country |
---|---|---|
1512321 | Jun 1978 | GBX |
Entry |
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Research Disclosure (Anon.) Apr. 1977 (pp. 85-86) No. 15657. |
Maxtract, Product Bulletin, Stowe-Woodward Co., Jul. 25, 1975. |