USD250644SExpiredUtility
Insulator for an open coil electric heating unit
Est. expiryOct 12, 1996(expired)· nominal 20-yr term from priority
Inventors:Carlisle Thweatt, Jr.
50
PatentIndex Score
4
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an insulator for an open coil electric heating unit, substantially as shown.
Join the waitlist — get patent alerts
Track USD250644S — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.