Number | Name | Date | Kind |
---|---|---|---|
231599 | McDermott | Aug 1880 | |
306296 | Vail | Oct 1884 | |
D337116 | Hattori | Jul 1993 | |
D340033 | Okinura et al. | Oct 1993 | |
D344730 | Gattey et al. | Mar 1994 | |
D346380 | Fitzgerald | Apr 1994 | |
D361066 | Langhorn et al. | Aug 1995 | |
D363487 | Thurnau | Oct 1995 | |
D365559 | Fathi | Dec 1995 | |
D394436 | Hall et al. | May 1998 | |
D394437 | Landreth et al. | May 1998 | |
894258 | Cobb | Jul 1908 | |
1085916 | Hutchinson | Feb 1914 | |
1139177 | Ganzer | May 1915 | |
1329029 | Timmons | Jan 1920 | |
1354524 | Timmons | Oct 1920 | |
1483315 | Saal | Feb 1924 | |
2566313 | Cates | Sep 1951 | |
2571514 | Andrews | Oct 1951 | |
2611831 | Cates | Sep 1952 | |
2653193 | Anderson | Sep 1953 | |
3190973 | Aileo | Jun 1965 | |
3314424 | Berman | Apr 1967 | |
4685448 | Shames et al. | Aug 1987 | |
4771454 | Wilcox, Jr. | Sep 1988 | |
4979586 | Lazzeroni et al. | Dec 1990 | |
4993065 | Chiou | Feb 1991 | |
5113428 | Fitzgerald | May 1992 | |
5163093 | Frielingsdorfer et al. | Nov 1992 | |
5185807 | Bergin et al. | Feb 1993 | |
5457751 | Such | Oct 1995 | |
5469505 | Gattey et al. | Nov 1995 | |
5617477 | Boyden | Apr 1997 |
Number | Date | Country |
---|---|---|
1230574 | Sep 1960 | FRX |
1397803 | Mar 1965 | FRX |
1177686 | Jan 1963 | DEX |
2132944 | Jan 1973 | DEX |
Entry |
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Hello Direct, p. 6 Headset shown therein, Wint.91. |
Hello Direct, p. 42, Headset shown in upper right corner, Spr. 97. |