4. B - Operations, Transporting
  5. 23
  6. P

Pierre Longpre

B - Operations – Transporting – 23 – P

Inventor

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Details

Inventor

Country: Canada

Manhole cover frame

E - Fixed Constructions – 02 – D
Patent

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Movable manhole cover

E - Fixed Constructions – 02 – D
Patent

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Precast concrete slab with steel beam

B - Operations – Transporting – 23 – P
Patent

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Seal for manholes and sumps

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

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Seal for manholes and sumps

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

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Profile ID: LFCA-PAI-P-1098086

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