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US4018088A
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Borehole pressure measurement apparatus having a high pressure float valve
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CA980333A
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Method and apparatus for orienting a borehole device
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CA990067A
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Borehole orientation tool
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US3915010A
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Bellows assembly
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US3895527A
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Method and apparatus for measuring pressure related parameters in a borehole
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US3898877A
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Method and apparatus for measuring pressure related parameters
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US3883788A
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Gyroscope orientation controller
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CA958918A
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Rotor tilt
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CA955317A
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Control system
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FR2170473A5
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Pressure metering system - for the fluid in a producing well
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US3810387A
|
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Apparatus for recording borehole conditions at the surface
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US3798976A
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Rotor tilt
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US3804168A
|
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Wire line clamp
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US3765494A
|
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Circulating sleeve
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DE2057229A1
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Method and device for measuring and displaying borehole data
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CA958467A
|
|
Data insertion system
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US3718194A
|
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Method and apparatus for orienting a borehole device
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US3741013A
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Signal responsive display apparatus
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US3742444A
|
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De-synchronizing system
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US3703832A
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Rotor tilt
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