Number | Name | Date | Kind |
---|---|---|---|
1615976 | Going | Feb 1927 | |
2157607 | Hart | May 1939 | |
4318452 | Reitner | Mar 1982 | |
4327639 | Crystal et al. | May 1982 | |
4754827 | Hirabayashi | Jul 1988 | |
4987679 | Rau | Jan 1991 |
Number | Date | Country |
---|---|---|
3603816 | Apr 1987 | DEX |
0100091 | Jun 1982 | JPX |
0113565 | May 1987 | JPX |
Entry |
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"Acoustic Isolation of a Print Hammer Head from a Print Hammer Body" IBM Technical Disclosure vol. 28 No. 10 Mar. 1986. |