Terms for subject Patents containing exchange

English	Spanish
contract of exchange	contrato de intercambio
currency exchange/conversion	cambio/conversión de divisas
exchange of letters	correspondencia
foreign exchange bureaux	oficinas de cambio de divisas
money exchange services	servicios de cambio de divisas
quotation of stock exchange prices	cotización de precios en bolsa
stock exchange quotations	cotizaciones del mercado de valores