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Echomax | Supplier | Echomax |
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| Address | PO Box 6032, Dunmow, CM6 3AS, United Kingdom |
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| Telephone | 01371 830216 |
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| Email | echomaxsales@aol.com |
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| Supplier Web Site | www.echomax.co.uk |
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Concerned about the performance of radar reflectors, in the seventies John Firth patented a design which, as licensees, Firdell was jointly established to market. Firdell stopped selling Pentland Firth reflectors and continued to market another design which they sold as the Blipper. Connections with that company severed and John then patented an improved design which was sold as the Gillie-Firth for 25 years. The Echomax was a revolutionary design of the stacked array principle and was his third patent.
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