 The counsels of the "Goebel-Defense" didn't provide any documentation or convincing proof which could be dated without any doubt to a time earlier than 1880, the year the patent was granted to Thomas Edison.Many persons providing affidavits in 1893 said that they had seen the electric lamps of Henry Goebel in the 1850s to the 1870s.Henry Goebel used his lamps according to these affidavits for the advertizment of his shop in New York and for the advertizment of his telescope at Union Square, New York.