4. H - Electricity
  5. 02
  6. K

John A. Urban

H - Electricity – 02 – K

Inventor

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Brake control system

G - Physics – 05 – D
Patent

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Disc brake friction pad bolt locking method

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

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Drum brake

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

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Expanding shoe drum brake

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

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Relay compensator valve

B - Operations – Transporting – 60 – T
Patent

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Profile ID: LFCA-PAI-P-76603

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