USD282935SExpiredUtility

Teaching apparatus for correcting learning problems

70
Individually held — no corporate assignee on recordPriority: Jan 27, 1983Filed: Jan 27, 1983Granted: Mar 11, 1986
Est. expiryJan 27, 2003(expired)· nominal 20-yr term from priority
Inventors:David C. Shifflett
70
PatentIndex Score
14
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a teaching apparatus for correcting learning problems, as shown and described.

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