4. Planting
  5. Liquid or gas soil treatment
  6. Hand manipulated

Calvin L. Jacobson

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Combination coulter and fertilizer knife apparatus

Planting – Liquid or gas soil treatment – Hand manipulated
Patent

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Self-aligning swivel clamp

Planting – Liquid or gas soil treatment – Hand manipulated
Patent

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Transporting device

Land vehicles – Ski or skate appliance or attachment – Scabbards for ice or roller skates
Patent

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Profile ID: LFUS-PAI-P-423367

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