| K and L Microwave Inc
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| Designer and manufacturer of custom RF and microwave filters, delay lines, duplexers and diplexers, combiners, receive multicouplers, directional couplers and system assemblies. |
| Korea Microwave Technology Co Inc
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| Microwave and optical communication equipment. |
| KP Microwave Components Inc
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| Manufacturer of RF/microwave filters, diplexers, duplexers, multiplexers, high-power PIN diode switches, frequency multipliers, and GPS subassembllies. |
| Kuhne Electronic
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| Microwave components for professional and amateur radio applications. |
