model                        introduction            discontinued  cpu speed print speed (ppm) standard memory maximum memory
0   4000                       november 1997                may 1999    100 mhz                17            4 mb         100 mb
1   4050                            may 1999           november 2001    133 mhz                17            8 mb         192 mb
2   4100                          march 2001           february 2003    250 mhz                25           16 mb         256 mb
3   4200                       november 2002  june / november 2005 1    300 mhz                35           48 mb         416 mb
4   4240  - please add details on this model          - discontinued  - 460 mhz              - 40         - 48 mb       - 512 mb
5   4250                       november 2002  june / november 2005 1    460 mhz                43           48 mb         512 mb
6   4300                       december 2002               june 2005    350 mhz                45           64 mb         416 mb
7   4350                       november 2002               june 2005    460 mhz                52           64 mb         512 mb

Table as JSON:
{"model":{"0":4000,"1":4050,"2":4100,"3":4200,"4":4240,"5":4250,"6":4300,"7":4350},"introduction":{"0":"november 1997","1":"may 1999","2":"march 2001","3":"november 2002","4":"- please add details on this model","5":"november 2002","6":"december 2002","7":"november 2002"},"discontinued":{"0":"may 1999","1":"november 2001","2":"february 2003","3":"june \/ november 2005 1","4":"- discontinued","5":"june \/ november 2005 1","6":"june 2005","7":"june 2005"},"cpu speed":{"0":"100 mhz","1":"133 mhz","2":"250 mhz","3":"300 mhz","4":"- 460 mhz","5":"460 mhz","6":"350 mhz","7":"460 mhz"},"print speed (ppm)":{"0":"17","1":"17","2":"25","3":"35","4":"- 40","5":"43","6":"45","7":"52"},"standard memory":{"0":"4 mb","1":"8 mb","2":"16 mb","3":"48 mb","4":"- 48 mb","5":"48 mb","6":"64 mb","7":"64 mb"},"maximum memory":{"0":"100 mb","1":"192 mb","2":"256 mb","3":"416 mb","4":"- 512 mb","5":"512 mb","6":"416 mb","7":"512 mb"}}