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This Post Has Been Edited by the Author
In Reply to: RE: Does any one know if the out of patent Heil waveguide is being produced and sold? posted by Rafaro on June 01, 2017 at 07:51:49
Your referenced link is not the patent application nor the U.S. Patent and Trademark Office document. It's Google's (or other organization's) summary/interpretation.
A link to the actual patent would be excellent.
And, yes, it's for a "waveguide", not the tweeter.
:)
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