Acoustic plug release indicator

Details Acoustic plug release indicator Acoustic plug release indicator

1982-11-03

1984-09-04

Gill, James J.

Measuring and testing

Vibration

Sensing apparatus

73155, G01H 100

Patent

active

044689675

ABSTRACT:
The present invention comprises an acoustic plug release indicator system. The acoustic plug release indicator system comprises a microphone, recording system and operator listening device.

REFERENCES:
patent: 2201311 (1940-05-01), Halliburton
patent: 2277110 (1942-03-01), Johnson
patent: 2572157 (1951-10-01), Kay
patent: 2769929 (1956-11-01), Hardway
patent: 3176513 (1965-04-01), Kriete
patent: 4206810 (1980-06-01), Blackman

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