Inventor

MCDONALD WILLIAM J

US28 patents

⚠️ This page may combine multiple inventors who share the name “MCDONALD WILLIAM J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MCDONALD WILLIAM J

MAURER ENG

Controlled directional drilling system and method

Downhole buried utility sensing and data transmission system and method

Deviated wellbore drilling system and apparatus

Pressure balanced bearing assembly for downhole motors

Advanced coring apparatus and method

Deviated wellbore drilling system and apparatus

GAS RES INST

Guided earth boring tool

Guided earth boring tool

Steering system for percussion boring tools

Percussion boring tool

Air motor operated rotary earth drilling tool

DEXTER MAGNETIC TECHNOLOGIES I

Wellbore motor having magnetic gear drive

Wellbore valve having linear magnetically geared valve actuator

Wellbore motor having magnetic gear drive

MACKIE & SONS LTD J

Method and apparatus for re-cycling plastics waste

Textile yarn winding apparatus

Method and apparatus for texturizing thermoplastic yarn

TELE DRILL INC

Insulated drill collar gap sub assembly for a toroidal coupled telemetry system

Point gap assembly for a toroidal coupled telemetry system

SLIMDRIL INTERNATIONAL INC

Steering sub for flexible drilling

Earth drilling apparatus with control valve

MCDONALD WILLIAM J

Wireless multiple non-synchronized athletic event time keeping and communication system

Wine cask restraining accessory

ELECTRIC POWER RES INST

Wireless downhole electromagnetic data transmission system and method

MAURER TECHNOLOGY INC

Multi-gradient drilling method and system

REHM WILLIAM A

Orienting and circulating sub

CONS EDISON CO

Impact and impact-rotary tool testing apparatus using rotary speed and impact energy

GYRO ENTERPRISES ROTATES PTY L

Speedometer and ratio testing apparatus