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#1
October 21st 17, 03:17 AM
posted to rec.aviation.soaring
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air extractor for asw19 and asw20
4) The extractor shown may well infringe on the patent applied for by JS or their resources. FWIW- Hard core performance guy. UH I am buying one for my old ASW-19 which my brother now owns. In emailing Alan, I mentioned the RAS patent infringement musings. Here is his response to that issue: No patent infringement. My product was developed long before Jonkers tried to patent their version and also uses different airfoil sections, materials, technologies. FWIW, RO 
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#2
October 21st 17, 04:02 AM
posted to rec.aviation.soaring
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air extractor for asw19 and asw20
Hopefully he had some documentation of that, evidence of construction or sale... which could invalidate the Jonkers patent.
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