55764
History The owner of the KA-BAR trademark , the Union Cutlery Co. of Olean , New York , began using the name on its knives and in its advertising in 1923 after receiving a testimonial letter by a fur trapper , who used the knife to kill a wounded bear that attacked him after his rifle jammed .
 Cutlery Co., Olean
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cutlery Co., Olean