USD252635SExpiredUtility

Portable learning unit

Assignee: CONTROL DATA CORPPriority: Apr 27, 1977Filed: Apr 27, 1977Granted: Aug 14, 1979

Est. expiryApr 27, 1997(expired)· nominal 20-yr term from priority

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Claims

exact text as granted — not AI-modified

The ornamental design for a portable learning unit, as shown and described.

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