Number | Date | Country | Kind |
---|---|---|---|
63-93300[U] | Jul 1988 | JPX | |
63-235731 | Sep 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2406644 | Spraragen | Aug 1946 | |
4250765 | Niklaus et al. | Feb 1981 | |
4458795 | Norton | Jul 1984 | |
4577716 | Norton | Mar 1986 | |
4726437 | Norton | Feb 1988 | |
4852707 | Ito et al. | Aug 1989 | |
4901831 | Ito et al. | Feb 1990 |
Number | Date | Country |
---|---|---|
2031527 | Dec 1971 | DEX |
Entry |
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Design News Reprint, "Nonreversing Coupler Has Zero Backlash", J. E. Mann, from May 11, 1966 issue. |