News4 mins ago
20th century
8 Answers
1917 C B develops F for P F
1921 C C introduces P, C N F
1939 B of the R P
1941 D S T introduced
1999 A M succeeds T H as P L
1994 S open L on a S
Thanks for any help, I still need some more but these would fill some large gaps!
1921 C C introduces P, C N F
1939 B of the R P
1941 D S T introduced
1999 A M succeeds T H as P L
1994 S open L on a S
Thanks for any help, I still need some more but these would fill some large gaps!
Answers
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