Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
{{Information |Description=Screen shot from the public domain serial, ''en:Undersea Kingdom'' (1936). The villain's "Volkite" robots emerging from the "Juggernaut" tank. |Source=Originally from [http://en.wikipedia.org en.wikipedia]; description page