USD261776SExpiredUtility

Electronic teaching unit

52
Assignee: ENRICHMENT READING CORP OF AMERCAPriority: Jun 15, 1979Filed: Jun 15, 1979Granted: Nov 10, 1981
Est. expiryJun 15, 1999(expired)· nominal 20-yr term from priority
Inventors:David W. Wendt
52
PatentIndex Score
5
Cited by
1
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an electronic teaching unit as shown.

Join the waitlist — get patent alerts

Track USD261776S — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.