4. Metal deforming
  5. By relatively movable offset tool-faces
  6. Plural

Nat Levenberg

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Adjustable flue control for furnaces

Stoves and furnaces – Dampers – Stovepipe
Patent

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Adjustable flue control for furnaces

Stoves and furnaces – Dampers – Stovepipe
Patent

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Bi-directional clutch

192 clutches and power-stop control – Clutches – Torque responsive
Patent

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Chair for handicapped persons

Chairs and seats – Movable bottom – Movable independently of back
Patent

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Chair for handicapped persons

Chairs and seats – Movable bottom – Movable independently of back
Patent

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