The Development Finance Corporation of New Zealand

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4695101 Pressure regulatorExpiredMar 11, 86Sep 22, 87[B60T]
4653319 Speed indicating meansExpiredAug 13, 85Mar 31, 87[G01F]
4651023 Electronic switchExpiredMay 29, 85Mar 17, 87[H03F]
4643355 Method and apparatus for modification of climatic conditionsExpiredDec 16, 85Feb 17, 87[A01G]
4639708 Parallelogram electric coil helically woundExpiredFeb 19, 85Jan 27, 87[H01F]
4620188 Multi-level logic circuitExpiredAug 13, 82Oct 28, 86[H03K, H04Q]
D285903 Bottle or the likeExpiredMay 15, 84Sep 30, 86[]
4603125 Substituted o-phenylenediamine acridine compounds having antitumor activityExpiredNov 14, 83Jul 29, 86[A61K, C07F, C07D]
4590277 Acridinecarboxamide compoundsExpiredJun 21, 83May 20, 86[A61K, C07D]
4543687 Tapered nesting hingeExpiredAug 15, 83Oct 01, 85[E05D]
4532124 Dental rinseExpiredAug 16, 82Jul 30, 85[A61K]
4516770 Ball identification for a table ball gameExpiredDec 23, 82May 14, 85[A63D]
4473646 Stereospecific asparaginasesExpiredApr 10, 81Sep 25, 84[C12N]
4450762 Onion peeling meansExpiredJun 04, 82May 29, 84[A23N]
4442214 Thermo-stable micro-organismExpiredAug 08, 80Apr 10, 84[C12N]
4411206 Precision sowerExpiredJul 20, 81Oct 25, 83[A01C]
4352245 Distance indicating devicesExpiredOct 24, 80Oct 05, 82[G01B]
4330440 Activated matrix and method of activationExpiredMar 10, 80May 18, 82[C08L]
4224439 Activated matrix and method of activationExpiredFeb 02, 78Sep 23, 80[C08B]

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