The patent for the H&R Super Handcuffs dates from 1932, but the cuffs were made beginning in the late 1930s for the FBI.
Once a patent expires, the invention can be manufactured by anyone.
Old Newgate Prison was created in 1773.
There are actually no age limits on buying a patent -- it just has to be your own and you're all set.
Old enough to invent something patentable.
It is a patent for an old lighter, invented by some Megill.
63
Fremantle Prison was opened in 1855.
I have never heard he went to prison.
Sarah Boone received a patent for inventing the ironing board. That patent was issued on April 26, 1892. She was about 60 years old when the patent was approved.
56 years old
chain is "chein" or in old times "kusari" in Japanese handcuffs are "tejo" ship's chain is "fune no kusari"
Nelson Mandela was 72 when he was released from prison.