4. Internal-combustion engines
  5. Lubricators
  6. Crankcase, pressure control

John E. Richards

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Diameter gage for rings and round objects

Geometrical instruments – Gauge – Circular size
Patent

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Locking ratchet wrench

Tools – Wrench – screwdriver – or driver therefor – Sliding jaw – handle-lever grip
Patent

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Pre-start engine oiler

Internal-combustion engines – Lubricators – Crankcase – pressure control
Patent

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Profile ID: LFUS-PAI-P-298855

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