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Does any one know if the out of patent Heil waveguide is being produced and sold?

Dr Christian Heil landmark HF line array waveguide has been out of patent protection since 2012. Does anyone know if its being produced and sold by anybody?

https://www.google.com/patents/US5163167

thanks


Rafaro


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Topic - Does any one know if the out of patent Heil waveguide is being produced and sold? - Rafaro 07:51:49 06/01/17 (6)

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