ELTECH SYSTEMS LTD HAMILTON BERMUDA A BERMUDA CORP

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4595545 Refractory metal borides and composites containing themExpiredDec 30, 82Jun 17, 86[C22C]
4586562 Plate and frame heat exchanger assembly with anodic protectionExpiredAug 10, 83May 06, 86[F28F, C23F]
4568440 Bipolar electrolyzer having fixedly spaced apart electrodesExpiredAug 30, 83Feb 04, 86[C25B]
4517069 Titanium and titanium hydride reticulates and method for makingExpiredJul 01, 83May 14, 85[C25C, C25B]
4515672 Reticulate electrode and cell for recovery of metal ionsExpiredJul 25, 83May 07, 85[C25C, C25B]
4501803 Porous gas diffusion-electrodeExpiredAug 29, 83Feb 26, 85[H01M, C25F]
4465533 Method for making polymer bonded electrodesExpiredJan 13, 83Aug 14, 84[C25B, B32B]
4436608 Narrow gap gas electrode electrolytic cellExpiredAug 26, 82Mar 13, 84[C25B]

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