Okay,
So after doing some research, I found the following.
1878ish-1890 FOSTER BROS. (founding name of company)
1891-1904 FOSTER BROS. COMPANY (incorporated under new name)
1904-1953 FOSTER BROS. & CHATILLON CO. (acquired by Chatillon)
1953-1956 FOSTER BROS.
1957+ COLUMBIA CUTLERY CORP uses FOSTER BRO. LOGO, original plant closes
Now I am not sure if my knife is from 1878 - 1890, or 1953 - 1956. Can any experts tell me more? Thanks!