Forgot unlock pattern

[iammojo82]

I have what I believe is a Yoshima MID M70003 7" tablet with the android operating system1.6, kernel 2.6.29, WMT SDK 2.1.1. I had entered drawn an unlock pattern but have forgotten it over time. I have entered it numerous times unsuccessfully and now unable to get past the unlock pattern screen rendering the tablet useless. How do I retieve unlock pattern or reset this info so I can use this tablet!!!!!