U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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Examiner: Dahl, Lawrence J.


Primary examiner statistics: 204 patents; average approval time: 576 days
Assistant examiner statistics: 191 patents; average approval time: 632 days

Patents as Primary Examiner (view all)

Patent No. Patent Title:
4241313 Audio power amplifier
4190805 Commutating autozero amplifier
4189680 Isolated signal conditioner
4186309 Web monitoring and control apparatus for web handling machinery
4184124 Operational amplifier
4182993 Signal amplitude compression system
4182992 Pulse width modulated signal amplifier
4180780 Input decoupling circuit for transistor differential amplifier
4179620 Crossover arrangement for multiple scanning arrays
4179621 Scanning apparatus
4179665 Switched capacitor elliptic filter
4179666 Method and circuit for controlling the output signal of a variabl...
4179668 HF-amplifier circuit
4179667 Circuit arrangement for adjusting the volume of an automobile rad...
4178556 Class D amplifier system
4175257 Modular microwave power combiner
4173739 Overload detecting circuit for a PWM amplifier
4173740 Speaker protection circuit
4172999 Self-biasing amplifier stage
4172221 Circuit arrangement for automatically closing a switching transis...
4170761 Remotely powered intermediate amplifier for communications transm...
4169996 Operational amplifier with slew recovery enhancement
4168472 Variable gain controller
4167710 Pulse width modulated signal amplifier with protective means
4167708 Transistor amplifier
4167709 Push-pull amplifier output circuit
4166982 Logical circuit reference electric level generating circuitry
4166981 Continuous signal amplitude regulator
4166983 Circuit for limiting the output voltage of an amplifier
4166214 Optical-electrical system for monitoring filaments, wires, strand...
4165494 Bi-state linear amplifier
4164686 Load current pulse control devices
4163198 Audio amplifier
4163197 Audio-frequency power amplifier
4162456 Differential amplifying system
4162457 Expansion circuit for improved stereo and apparent monaural image
4162398 Bias control circuit for light modulators
4160216 Apparatus for eliminating on-off transitional gain variations in ...
4159449 Long-tailed-pair with linearization network
4159422 Temperature stable displacement sensor with fine resolution

Patents as Assistant Examiner (view all)

Patent No. Patent Title:
4072878 Starting and operating apparatus for high pressure sodium lamp ba...
4057763 Current amplifiers
4053847 Self-feedback type low-noise charge sensitive amplifier
4050029 Electronic apparatus comprising an audio amplifier providing shun...
4048578 R.F. amplifier circuit
4048579 Feed-forward amplifier
4047119 Transistor differential amplifier circuit
4047118 Transistor amplifier circuit
4047122 Frequency compensated differential amplifier
4047069 High-pressure mercury-vapor lamp having a plural phosphor coating
4045731 Filter having an automatically controlled variable cut-off freque...
4042885 Zeroing circuit
4042890 High efficiency electrical power conditioner
4042889 Overvoltage protection circuit for general purpose amplifier
4041347 Cathode-ray tube having conductive internal coating exhibiting re...
4041410 RF level detector
4041413 Automatic phase compensation circuit for paralleling power amplif...
4039898 Electronic flash apparatus
4039963 Stabilizer for the base level of an amplifier
4037167 Automatic gain control amplifier
4037169 Transistor amplifier
4037170 Difference amplifier having extended common mode range
4035681 Polygonal lens
4035689 Panel-type display device
4035737 Low noise amplifier
4035738 Low noise amplifier
4034257 Mercury vapor lamp utilizing a combination of phosphor materials
4034308 Amplifier with controllable transmission factor and switchable co...
4034307 Current amplifier
4032856 Drift compensated amplifier, particularly for measuring signals
4032854 Amplification and gain control circuit
4032811 Unitized in-line electron gun having improved support structure
4032817 Wide range power control for electric discharge lamp and press us...
4032853 Overdrive detector for radio frequency amplifier
4031482 Bias circuit for FET
4031480 Circuit arrangement for the ungrounded transmission of signals th...
4031481 Transistor amplifier
4028630 Push-pull amplifier arrangement
4028632 Power dividing and combining techniques for microwave amplifiers
4028634 Feed-forward amplifier with simple resistive coupling
 
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