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Patents

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US39926365 Feb 197616 Nov 1976Allen-Bradley CompanyDigital input circuit with fault detection means
US402722823 Mar 197631 May 1977General Electric CompanyPhotocoupled isolated switching amplifier circuit
US407927231 Mar 197614 Mar 1978The Charles Stark Draper Laboratory, Inc.Optically isolated interface circuits
US419747129 Sep 19778 Apr 1980Texas Instruments IncorporatedCircuit for interfacing between an external signal and control apparatus
US427530714 May 197923 Jun 1981Allen-Bradley CompanyInput circuit for digital control systems
US441319311 Jun 19811 Nov 1983Teccor Electronics, Inc.Optically coupled solid state relay
US450757129 Sep 198226 Mar 1985Allen-Bradley CompanyOptically coupled input circuit for digital control
US507386620 Sep 198917 Dec 1991Traffic signal control system