Number | Name | Date | Kind |
---|---|---|---|
3821815 | Abbott et al. | Jun 1974 | |
4014141 | Riddle et al. | Mar 1977 |
Entry |
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IBM Technical Disclosure Bulletin, vol. 18, No. 1, Jun. 1975, p. 227, Throat Height Control. |
IBM Technical Disclosure Bulletin, vol. 23, No. 6, Nov. 1980, p. 2550, Lapping Guides for Magnetic Heads. |