G01H 13 - Measuring resonant frequency

Patents for G01H 13 - Measuring resonant frequency (1,015)
12/1978
12/19/1978	CA1044761A1 Apparatus for sorting mechanical resonators according to inherent frequency
11/1978
11/14/1978	CA1042510A1 Apparatus for measuring resonance frequency of mechanical resonators
10/1978
10/31/1978	US4122723 Method and apparatus for testing the quality of cast iron pieces especially spheroidal cast-iron pieces
10/03/1978	US4117731 Pseudo continuous wave instrument
09/1978
09/19/1978	US4114454 Method of measuring the resonance frequency of mechanical resonators
07/1978
07/25/1978	US4102195 Hot spot temperature sensor
06/1978
06/20/1978	US4095474 Monitoring systems and instruments
03/1978
03/14/1978	US4078434 Method and apparatus for determining the parameters of natural vibration of a system
12/1977
12/13/1977	US4062229 Method of testing the integrity of installed rock bolts
12/13/1977	US4062227 CW ultrasonic bolt tensioning monitor
08/1977
08/23/1977	US4044239 Method and apparatus for adjusting vibration frequency of vibrating object
08/16/1977	US4041783 System for measuring vibration frequency of vibrating object
03/1977
03/29/1977	US4015202 Automatic measurement and display of resonance frequencies of seismic detection elements
03/22/1977	US4012870 Apparatus for measuring and changing vibration frequency of metal B
05/1976
05/11/1976	US3955404 Resonant sensing device

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