Number | Name | Date | Kind |
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4891641 | Gard et al. | Jan 1990 | |
5387907 | Gardner et al. | Feb 1995 |
Entry |
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Contribution T1E1.4/90-154, Carrierless AM/PM, Sobrara et al., presented to the American National Standards Institute (ANSI) T1E1.4 Technical Sub-Committee Working Group, 1990. |