When Was The Electric Pencil Sharpener Patent
Best Methods for Client Relations when was the electric pencil sharpener patent and related matters.. US3134365A - Electric pencil sharpener - Google Patents. An electric pencil sharpener designed to cut and shape the lead point of a pencil to any desired size or thickness by an extremely simple procedure and with From pencil sharpeners to a $539m lawsuit: how big tech *Pp162- Blueprint Pencil Sharpener Patent Poster Photograph by Cole *...