Usd/chf - 1.0478 ... Standard & Poor's Ratings Services said that it withdrew its 'AAA' long-term n 'A-1+' short-term issuer credit rating on Swiss National Bank. U.S. dollar jumped to 1.0509 on cross selling in chf (eur/chf rose fm 1.3788 to 1.3850) b4 retreating.