Number | Name | Date | Kind |
---|---|---|---|
3210228 | Bluck | Oct 1965 | |
3414449 | Beach | Dec 1968 | |
4684423 | Brooks | Aug 1987 | |
4921557 | Nakamura | May 1990 |
Entry |
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Special report prepared by Manufacturing Research and Development, pp. I-IV; 1-9; and 11 (publication date unknown). |