4. Geometrical instruments
  5. Straightedge type
  6. Cord type

Derek Lane

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Automatic pet feeding apparatus

Animal husbandry – Feeding device – Timer-controlled
Patent

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Cassette adapter for eight track machines

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent

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Chalk line dispenser

Geometrical instruments – Straightedge type – Cord type
Patent

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Profile ID: LFUS-PAI-P-698806

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