Patent print poster of a Oil Derrick Erection and Support System invented by Norman D. Dyer et al. The patent was issued by the United States Patent Office on December 16, 1969. Here is an interesting fact: The derrick derives its name from a type of gallows named after Thomas Derrick, an Elizabethan era English executioner.
Patent prints allow you to have a piece of history in your home, office, man cave, geek den or anywhere you wish to add an interesting touch.
