4. Measuring and testing
  5. Hardness
  6. By penetrator or indentor

Sten Engwall

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Method and apparatus for measuring load bearing capacity of traf

Measuring and testing – Hardness – By penetrator or indentor
Patent

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Self-maintaining winches

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent

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Self-tailing winch

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent

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