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All Patents of Type: electrical relays | |||||
Number | Date | Patentee | Title | Type | |
2,162,329 | Jun. 13, 1939 | E.J. Dillman | Transformer Relay Unit | transformers | |
3,174,081 | Mar. 16, 1965 | L.A. Burnett | Logic Nor Relay Circuits | electrical relays |