Number | Name | Date | Kind |
---|---|---|---|
3480485 | Hart et al. | Nov 1969 | |
3501270 | Uchida et al. | Mar 1970 | |
3790355 | Palisin, Jr. | Feb 1974 | |
3928157 | Suematsu et al. | Dec 1975 |
Number | Date | Country |
---|---|---|
730130 | Mar 1966 | CAX |
Entry |
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Metal Finishing Guidebook and Directory, Metals and Plastics Publications, Inc. Hackensack, N.J., pp. 194, 276, 572-575, 641, 652-653. |