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Patent Number Title Of Patent Date Issued
4890094 Wallet incorporating credit card alarm system Dec. 26, 1989
4890093 Solar powered proximity triggered light Dec. 26, 1989
4890092 Door stop alarm Dec. 26, 1989
4890091 Self contained collision avoidance light Dec. 26, 1989
4890090 Pressure alarm system for motor vehicle tires Dec. 26, 1989
4890089 Distribution of line carrier communications Dec. 26, 1989
4890088 Engine monitoring and control apparatus Dec. 26, 1989
4890086 Transformer assembly Dec. 26, 1989
4890085 Terminal fitted bobbin Dec. 26, 1989
4890084 Inductance strain gauge Dec. 26, 1989
4890083 Shielding material and shielded room Dec. 26, 1989
4890082 Coil for generating a homogeneous magnetic field Dec. 26, 1989
4890081 CT quick change assembly Dec. 26, 1989
4890080 Electromagnetic relay with an operation indicating member Dec. 26, 1989
4890079 Di-electric bandpass filter Dec. 26, 1989
4890078 Diplexer Dec. 26, 1989
4890077 FET monolithic microwave integrated circuit variable attenuator Dec. 26, 1989
4890076 Reflection type SSB modulator Dec. 26, 1989
4890075 Optical radiation limiter Dec. 26, 1989
4890074 Quartz microstrip gunn oscillator Dec. 26, 1989
4890073 High frequency generator for use with loads subject to great impedance variations Dec. 26, 1989
4890072 Phase locked loop having a fast lock current reduction and clamping circuit Dec. 26, 1989
4890071 Signal generator utilizing a combined phase locked and frequency locked loop Dec. 26, 1989
4890070 Device to control the output power of a class C amplifier Dec. 26, 1989
4890069 Gallium arsenide power monolithic microwave integrated circuit Dec. 26, 1989
4890068 Open-loop current amplifiers having improved gain characteristics Dec. 26, 1989
4890067 Common base configuration for an f.sub.T doubler amplifier Dec. 26, 1989
4890066 Envelope detector Dec. 26, 1989
4890065 Relative time delay correction system utilizing window of zero correction Dec. 26, 1989
4890064 Metal detector sensing head with reduced eddy current coils Dec. 26, 1989
4890063 Probe coil system for magnetic resonance apparatus Dec. 26, 1989
4890062 Automatic impedance adjuster for MRI system Dec. 26, 1989
4890061 Magnetic resonance imaging apparatus Dec. 26, 1989
4890060 Electromechanical abutment sensor with resilient damper plate for sensing sheets in a sheet fold... Dec. 26, 1989
4890059 Digital tachometer with air gap adjusting yoke insertable through holes in the tachometer housin... Dec. 26, 1989
4890058 Arrangement for measuring the slip of electric induction motors Dec. 26, 1989
4890057 Instrument with crossed-coil type movable magnet Dec. 26, 1989
4890056 Method and apparatus for error correction of phase measurement signals Dec. 26, 1989
4890055 Compensated chirp fourier transformer Dec. 26, 1989
4890054 Apparatus and method for measuring physical quantities Dec. 26, 1989
4890053 Method and apparatus for detecting a missing object in a set of objects Dec. 26, 1989
4890052 Temperature constant current reference Dec. 26, 1989
4890051 CMOS input buffer stable for the variation of a power supplying voltage Dec. 26, 1989
4890050 Automotive alternator Dec. 26, 1989
4890049 Circuit and winding arrangement for a multiphase electric rotating field machine Dec. 26, 1989
4890048 Low torque ripple stepping motor controller circuit Dec. 26, 1989
4890047 Digital pulse width modulation control of brushless DC motors Dec. 26, 1989
4890046 Numerical control apparatus Dec. 26, 1989
4890045 Spindle motor control system for magnetic disk apparatus Dec. 26, 1989
4890044 High frequency signal suppression component Dec. 26, 1989










 
 
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