I sent my invention to Davison invention company.Everything I sent them was by Register mail.I was working with one of their worker.I sent my idea my money.Everything was OK until he sent me a contact for 50, 000 dollars.I would not sign the contract.First I was told the contract would not be over 20, 000 dollars.When i call back to talk about this the person who was working with me i'm told he no longer work there.When i call to talk to someone else i would explain what happen they say hold on .No one comes to phone.I wrote to BBB they did not write BBB back.I had a patent number.But i lost everything i had in storage.I sent some of my register mail from Elkridge Post Office in Elkridge Md.Davison stole my invention. My name at that time was Gale Colbert, I live at 5116 Duel place Capitol Heights md.They gave me a patent number that only last for five years.They lie about that too.I was told it was forever.I was working with my invention between 1999 and 2002.I been trying to find someone who would investigate this. I would give 40 percent of the winning.