Check this
link
What will you get after getting the copy of the bond. If its signed up by you(in presence of your mind), its total legal contract between you and your company. If you leave the company, you have to pay them the amount mentioned in your employment bond. Hiring a Lawyer in this case will only help one person, Lawyer himself(you will give good fee for that)
Though there is few scope of improvement from this year when Industrial Employment (Standing Orders) Act, 1946 will be applicable for the
Indian IT companies.
But Moury, you need to understand your employer perspective also. They have spend a good amount of time/money on you to make you productive. Agree that one should get good working conditions and good starting salary to live in city like Gurgaon. But changing your job just for the sake of increasing your salary for few thousand rupees will not help you in long run. Learn the things in which you work, be an expert in it, be passionate about it. If you haven't find the thing you are passionate about, invest time towards finding it. Money will definitely come down the line.
There are so many experienced people here in JavaRanch who suggest the same thing about finding your passion and improving your skills. I was also among one of those who got the same guidance when I was starting my career(and even getting it today).
So take your call after discussing it with your friends/peers and take into account the long term perspective of your career before moving ahead.