Number | Name | Date | Kind |
---|---|---|---|
D299344 | Stevens | Jan 1989 | |
D318053 | Ludeke et al. | Jul 1991 | |
D344522 | Taniguchi | Feb 1994 | |
D344730 | Gattey et al. | Mar 1954 | |
D350961 | Nakamura | Sep 1994 | |
4420657 | Larkin | Dec 1983 | |
B14420657 | Larkin | Apr 1988 | |
4668842 | Yokoyama et al. | May 1987 | |
4754484 | Larkin et al. | Jun 1988 | |
4864610 | Stevens | Sep 1989 | |
4926961 | Gattey et al. | May 1990 | |
5001763 | Moseley | Mar 1991 | |
5117461 | Moseley | May 1992 | |
5260997 | Gattey et al. | Nov 1993 | |
5446788 | Lucey et al. | Aug 1995 |
Number | Date | Country |
---|---|---|
2070956 | Dec 1991 | CAX |
Entry |
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Bell Laboratories Record, vol. 50 No. 5, May 1972, p. 140, Telephone headset with a New look. |