English: This is a Teletype Corporation advertisement from 1957. A search of the USPTO records indicates that all trademark registrations for "Teletype" and "Teletype Corporation" are expired.
This work is in the public domain in that it was published in the United States between 1923 and 1977 and without a copyright notice.
Teletype is no longer a registered trademark. The US Patent and Trademark Office records state "This registration was not renewed and therefore expired." This status change happened on December 15, 2000. Serial Number: 73157988, Registration Number: 1119161. The last renewal was on May 29, 1979. The trademark was transferred to AT&T on July 12, 1985 and they never renewed it.>
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 (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
(Original text) : {{Non-free use rationale |Article = A Teletype Coproration Advertisement from 1957 |Description = Teletype Model 28 KSR and description of a Teletype |Source = Teletype Corporation |Date = 1957
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