Memory operated well tools

Details Memory operated well tools Memory operated well tools

1985-03-29

1988-04-26

Smith, Jerry

Boots, shoes, and leggings

73154, G06F 1520

Patent

active

047408979

ABSTRACT:
A self-contained, down hole powered electrical system in which the tool has nonvolatile memory means which are independent of applied power thereby permitting the power to the system to be turned off between sampling and further including a system for reentering data to nonvolatile memories for retention during high temperature operations.

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patent: 4433395 (1984-02-01), Iyehara et al.
patent: 4452075 (1984-06-01), Bockhorst et al.
patent: 4553223 (1985-11-01), Bouhelier et al.
patent: 4593370 (1986-06-01), Balkanli
patent: 4611289 (1986-09-01), Coppola
patent: 4646307 (1987-02-01), Nishimura

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