Final answer:
Masaccio is the important Renaissance artist who worked with Bramante in Milan before 1494. He is known for his innovative use of linear perspective.
Step-by-step explanation:
The important Renaissance artist who worked with Bramante in Milan before 1494 is Masaccio. Masaccio is widely credited as the first great painter of the Quattrocento period of the Italian Renaissance. He was known for his innovative use of linear perspective in his frescoes, such as those in the Brancacci Chapel in Florence.