4. G - Physics
  5. 01
  6. F

Douglas James Belshaw

G - Physics – 01 – F

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Inventor

Country: Canada

Apparatus for measuring and recording data from boreholes

E - Fixed Constructions – 21 – B
Patent

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Bladder pump for borehole sampling

E - Fixed Constructions – 21 – B
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Bore-hole packer

E - Fixed Constructions – 21 – B
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Down-hole liquid detecting apparatus

G - Physics – 01 – F
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Liquid-level detector

G - Physics – 01 – F
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Bore-hole packer

E - Fixed Constructions – 21 – B
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Packing-seal for boreholes

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-1095650

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