“When bar codes were patented in 1952, they were round.” Tom Whitwell’s 2020 edition of the 52 things he learned this year. December 1, 2020 themorningnews.org “When bar codes were patented in 1952, they were round.” Tom Whitwell’s 2020 edition of the 52 things he learned this year. ↩︎ Fluxx View Post →