Number | Name | Date | Kind |
---|---|---|---|
2248784 | Roseby | Jul 1941 | |
3075140 | Casey et al. | Jan 1963 |
Number | Date | Country |
---|---|---|
1,224,381 | Mar 1971 | UK |
Entry |
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"Wave Filters Protect Carrier Signals From Shunting Effect of Capacitors", Electrical World, 11/19/1949, pp. 106-108--Ringger, Jr. |