4. F - Mech Eng,Light,Heat,Weapons
  5. 16
  6. B

Roger M. Hansen

F - Mech Eng,Light,Heat,Weapons – 16 – B

Inventor

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Inventor

Country: United States Of America

Mine roof or rock bolt expansion anchor of the bail type

F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent

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Prefabricated mine overcast arch and the like

E - Fixed Constructions – 21 – D
Patent

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Prefabricated mine overcast arch and the like

E - Fixed Constructions – 21 – D
Patent

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Profile ID: LFCA-PAI-P-967668

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