Number | Date | Country | Kind |
---|---|---|---|
3019955 | May 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3886544 | Narodny | May 1975 | |
4021099 | Kawasaki et al. | May 1977 | |
4185885 | Chown et al. | Jan 1980 | |
4211469 | Holzman | Jul 1980 | |
4246475 | Altman | Jan 1981 | |
4274705 | Miller | Jun 1981 | |
4342517 | Johnson et al. | Aug 1982 |
Number | Date | Country |
---|---|---|
25586 | Mar 1981 | EPX |
Entry |
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Bickel et al., "Bidirectional Coupler for Full Duplex Transmission . . . ", Proc. of S.P.I.E., vol. 139, Guided Wave Opt. Systs. & Dev., Mar. 1978, pp. 63-69. |
Bealle, "Parabolic Coupler for Fibre Optics," IBM Tech. Discl. Bull., vol. 23, No. 3, Aug. 1980, p. 978. |