The things you worked on at your former job belong to your old employer. If you were an employee when you performed certain drawings, the drawings probably belong to your old employer and the employer would have all rights in them. There are many issues involved in what you are asking, including copyright rights and trade secret matters. You should not use any of the informationuntil you have discussed the precise matters with an attorney.
Answered on Apr 02nd, 2012 at 3:57 PM