Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 324/103P
Name: Electricity: measuring and testing > Measuring, testing, or sensing electricity, per se > Demand, excess, maximum or minimum (e.g., separate meters for positive and negative power, peak voltmeter) > Peak voltmeters
Description:










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
4301407 Hand held testing device for indicating an electric test voltage Nov. 17, 1981
4296375 Level indicator for indication of maximum values Oct. 20, 1981
4295099 Peak detector Oct. 13, 1981
4271391 Digital voltmeter with electro-optical indication of the waveform Jun. 2, 1981
4263548 Midpoint measuring circuit Apr. 21, 1981
4262255 Level indicating device Apr. 14, 1981
4259631 Method and arrangement for measuring the attenuation-versus-frequency characteristics of two-ports Mar. 31, 1981
4251769 Indicator and limit value alarm device Feb. 17, 1981
4236111 Method and apparatus for the measurement of electric currents and/or voltages in a plurality of current or voltage circuits Nov. 25, 1980
4223682 Beat-to-beat systolic and diastolic indicator Sep. 23, 1980
4223180 Human speech envelope tracker Sep. 16, 1980
4213085 Phase inversion test device Jul. 15, 1980
4187461 Dynamic threshold impulse directivity indicator Feb. 5, 1980
4183025 Level indicating system Jan. 8, 1980
4177424 Methods of and a circuit for monitoring the amplitude of sine wave-shaped signals Dec. 4, 1979
4175252 Meter drive circuit Nov. 20, 1979
4166245 Simultaneous display of multiple characteristics of complex waveforms Aug. 28, 1979
4165508 Method and apparatus for detecting a peak value of an analog signal Aug. 21, 1979
4162444 Peak level detector Jul. 24, 1979
4158809 Signal measuring and display control method and apparatus Jun. 19, 1979
4151464 Integrating voltage to frequency converter and memory decoder Apr. 24, 1979
4144492 Method for measuring a voltage with the aid of an analogue-digital converter Mar. 13, 1979
4143317 Multiple range peak reading voltmeter Mar. 6, 1979
4112264 Testing and switching system including remotely controllable stations for information transmission and communications networks and systems Sep. 5, 1978
4109198 Peak level indicating electronic circuit Aug. 22, 1978
4096435 Level indicating device Jun. 20, 1978
4075513 Averaging and peak detection circuit Feb. 21, 1978
4074149 Peak detecting with constant fractional offset Feb. 14, 1978
4069452 Apparatus for automatically detecting values of periodically time varying signals Jan. 17, 1978
4065682 Logarithmic converter Dec. 27, 1977
4057754 Apparatus to measure the eccentricity of a shaft Nov. 8, 1977
4053799 Voltage memory device Oct. 11, 1977
4045732 Device for sensing the operative status of electrical equipment Aug. 30, 1977
4038568 Pulse peak sample and hold circuit Jul. 26, 1977
4036607 Method and relevant apparatus to check the rotation of mechanical workpieces being machined on grinders Jul. 19, 1977
4024459 Amplitude measurement of signals of different frequency May. 17, 1977
4006413 Field instrument for measurement of AC voltage fluctuations Feb. 1, 1977
4004220 Electronic voltmeter Jan. 18, 1977
3999125 Peak detector having signal rise-time enhancement Dec. 21, 1976
3987393 Line voltage monitor Oct. 19, 1976
3984772 Signal peak detection arrangement Oct. 5, 1976
3979670 Apparatus for detecting and measuring peak-to-peak values in electrical signals Sep. 7, 1976
3973197 Peak detector Aug. 3, 1976
3965419 Cathode ray tube meters Jun. 22, 1976
3949294 Level indicating system Apr. 6, 1976
3947761 Peak level indicator Mar. 30, 1976

1 2 3










 
 
  Recently Added Patents
Faucet hub
Methods and compositions for nucleic acid amplification
Circuit device for controlling a plurality of light-emitting devices in a sequence
Manufacturing method of flow passage network and flow passage network using the same
Structure and method for bump to landing trace ratio
Wearable charms for use with a wireless client device and method of using the same
Phase-locked loop having a constant damping ratio
  Randomly Featured Patents
Child proximity monitor and alarm
Correction of presbyopia using adaptive optics and associated methods
Bidirectional moldboard plow with moldboard frame including guide member
Apparatus and method for roll forming and marking sheet metal
System and method for virtual memory and securing memory in programming languages
Network flow switching and flow data export
Portable ventilator system
Programmable inverse time delay circuit
Optimizing blast furnace slag cements
Photochromic plastic lens and its method of manufacture