Number | Name | Date | Kind |
---|---|---|---|
1916465 | Dawson | Jul 1933 | |
3397126 | Gilbert | Aug 1968 | |
3969215 | Zievers | Jul 1976 | |
4806224 | Bruun et al. | Feb 1989 | |
5006216 | Dietrich et al. | Apr 1991 | |
5139039 | Yates | Aug 1992 |
Entry |
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Electroplating Engineering Handbook, 4th Edition, Chapter 4 on Barrels, by William H. Jackson and E. Kenneth Graham, p. 458. |