ThinkPad is a brand of portable laptop and notebook personal computers originally designed, manufactured and sold by IBM.<br />Since early 2005, the ThinkPad range has been manufactured and marketed by Lenovo, which purchased the IBM PC division.<br />The ThinkPad contains an intercooling mechanism that allows the computer's interworks to remain cool throughout its use.<br />Its creator also placed vents, a draining mechanism, which allows any spilled material to drain through the computer without wrecking the keyboard. (*)