Number | Date | Country | Kind |
---|---|---|---|
61-223149 | Sep 1986 | JPX | |
61-248726 | Oct 1986 | JPX | |
61-282501 | Nov 1986 | JPX | |
61-304326 | Dec 1986 | JPX | |
62-80015 | Apr 1987 | JPX | |
62-96502 | Apr 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2217279 | Karns | Oct 1940 | |
2632055 | Parker | Mar 1953 | |
3165587 | Alderson | Jan 1965 | |
3509290 | Mochida et al. | Apr 1970 | |
3754618 | Sasaki | Aug 1973 | |
3845246 | Ouvrier | Oct 1974 | |
3858679 | Askins | Jan 1975 | |
3944757 | Tsukamoto | Mar 1976 | |
3952159 | Schott | Apr 1976 | |
4005278 | Gorike | Jan 1977 | |
4196792 | Grieves et al. | Apr 1980 | |
4300655 | Sakamoto et al. | Nov 1981 | |
4379951 | Gabr | Apr 1983 | |
4413703 | Kato et al. | Nov 1983 | |
4426556 | Saiki et al. | Jan 1984 | |
4488012 | Matsuda et al. | Dec 1984 | |
4593160 | Nakamura | Jun 1986 | |
4618025 | Sherman | Oct 1986 | |
4793978 | Marquiss | Dec 1988 |
Number | Date | Country |
---|---|---|
164741 | Dec 1949 | ATX |
3123098 | Jan 1983 | DEX |
457868 | Jan 1951 | ITX |
57-23395 | Feb 1982 | JPX |
58-191598 | Nov 1983 | JPX |
59-12685 | Jan 1984 | JPX |
60-142699 | Jul 1985 | JPX |
Entry |
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Cohen, Hi-Fi Loudspeakers and Enclosures, John F. Rider, New York, 1956, pp. 165-174. |
Tremaine, Audia Cyclopedia, Howard W. Sams, Indianapolis, IN, 1979, pp. 1101-1102. |