Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Site na 1920s ruo 1960s, tupu mmepe nke mkpịsị akwụkwọ ballpoint, Parker bụ ma ọ bụ nọmba otu ma ọ bụ nọmba abụọ n'ụwa nile na-ere ngwá ọrụ ederede. N'afọ 1931, Parker mepụtara Quink (nkà na-ehicha ngwa ngwa), nke mere ka ọ ghara ịdị mkpa ka a na-ehichapụ ya. N'afọ 1941, ụlọ ọrụ ahụ mepụtara ụdị pensụl a na-ejikarị eme ihe n'akụkọ ihe mere eme (ihe karịrị nde $ 400 n'ahịa n'akụkọ ihe mere eme ya nke afọ 30), Parker 51. N'ime afọ ndị gafeworonụ, e guzobere ụlọ ọrụ mmepụta ihe na Canada, United Kingdom, Denmark, France, Mexico, USA, Pakistan, India, Germany (Osmia-Parker), Brazil na Argentina.  Ajụjụ: kedu ihe kacha ewu ewu na-edepụta akara tupu mkpịsị akwụkwọ?
Parker