SDS Biotech Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5013870 Box for containing electrical mechanismsExpiredApr 02, 90May 07, 91[H01J]
4905890 Closure for newspaper delivery receptacleExpiredJul 24, 89Mar 06, 90[B65D]
4862111 Microwave oscillator having a dielectric resonator, in particular for the 22 GHz rangeExpiredApr 13, 88Aug 29, 89[H03B]
4786890 Method and apparatus for implementing a PRML codeExpiredJul 28, 87Nov 22, 88[H03M]
4772360 Thin wall coke quenching containerExpiredFeb 19, 87Sep 20, 88[C10B]
4552630 Ceramic oxide electrodes for molten salt electrolysisExpiredJul 24, 81Nov 12, 85[C25C, C25B]
4461899 Fluorenecarboxylic acid derivativesExpiredMay 24, 82Jul 24, 84[C07D]
4430502 Pyridinyl substituted benzimidazoles and quinoxalinesExpiredAug 13, 82Feb 07, 84[A61K, C07D]
4264528 Method of preparing ketoxime carbamatesExpiredJun 18, 80Apr 28, 81[C07C]
4234514 Method of preparing ketoxime carbamatesExpiredDec 04, 78Nov 18, 80[C07C]
4203822 Method of producing sols by electrodialysisExpiredJan 24, 79May 20, 80[B01D]

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