ELGARD CORPORATION A CORP. OF DE

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4795539 System and use thereof for collecting chemical-physical, electrochemical and mechanical parameters for designing and/or operating cathodic protection plantsExpiredMar 13, 86Jan 03, 89[C23F]
4740106 Impressed current cathodic protection of off-shore platforms utilizing the tensioned anode ropes systemExpiredFeb 13, 87Apr 26, 88[E02B, C23F]
4544464 Ground anode prepacked with backfill in a flexible structure for cathode protection with impressed currentsExpiredApr 23, 84Oct 01, 85[C23F]
4526666 Method for electrically connecting non corrodible anodes to the corrodible core of a power supply cableExpiredJul 07, 83Jul 02, 85[C23F]
4519886 Method of making electrical connection to an anodeExpiredJan 25, 84May 28, 85[C23F]
4452683 Anodic structure for cathodic protectionExpiredDec 22, 82Jun 05, 84[C23F]

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