Number | Name | Date | Kind |
---|---|---|---|
4091316 | Friedman | May 1978 | |
4147967 | Aiena | Apr 1979 | |
4156105 | Arene et al. | May 1979 | |
4215302 | Chiang | Jul 1980 | |
4254371 | Scholten | Mar 1981 | |
4258622 | Estraband et al. | Mar 1981 | |
4293233 | Hoffman | Oct 1981 | |
4318625 | Survant | Mar 1982 |
Number | Date | Country |
---|---|---|
DE2824080A1 | Jul 1978 | DEX |
Entry |
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Survant, "Compensation for Natural Frequency Variation", IBM Technical Disclosure Bulletin, vol. 22, No. 9, p. 4135, 2/80. |
Kulterman, "Electrical Damping for . . . Motor", IBM Technical Disclosure Bulletin, vol. 21, No. 2, pp. 445-447, 7/78. |