Number | Name | Date | Kind |
---|---|---|---|
1717887 | Noack | Jun 1929 | |
2073187 | Webb | Mar 1937 | |
2631889 | Johnson, Jr. | Mar 1953 | |
3272231 | Livingston | Sep 1966 | |
3297260 | Barlow | Jan 1967 | |
3762649 | Dalhaus | Oct 1973 | |
4256140 | Swaroop et al. | Mar 1981 | |
4497664 | Verry | Feb 1985 |
Entry |
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Continental NH.sub.3 Products Co., Inc. catalog, p. FC-7, dated 1978. |
John Blue Company Promotional Sheet for A-6600 Manifold, dated 1982. |