Table:
text: Richard Attwood
Complete Formula One World Championship results
Complete Formula One World Championship results
Year_ Entrant Chassis Engine Points
1964 Owen Racing Organisation BRM P67 BRM V8 0
1965 Reg Parnell Racing Lotus 25 BRM V8 2
1967 Cooper Car Company Cooper T81B Maserati V12 0
1968 Owen Racing Organisation BRM P126 BRM V12 6
1969 Gold Leaf Team Lotus Lotus 49B Cosworth V8 3
1969 Frank Williams Racing Cars Brabham BT30 (F2) Cosworth Straight-4 3

Question: What is the earliest year that a Richard Attwood chassis had a Lotus 49B?