SELECT "Entrant" FROM table_49312 WHERE "Year" < '1965' AND "Chassis" = 'brabham bt10'
Which entrant had a Brabham BT10 chassis before 1965?
CREATE TABLE table_49312 (
    "Year" real,
    "Entrant" text,
    "Chassis" text,
    "Engine" text,
    "Tyres" text,
    "Points" text
)