USD553683SExpiredUtility
Writing instrument refill
Est. expiryNov 14, 2025(expired)· nominal 20-yr term from priority
77
PatentIndex Score
19
Cited by
13
References
1
Claims
Claims
exact text as granted — not AI-modifiedCLAIM
The ornamental design for a writing instrument refill, as shown and described.Join the waitlist — get patent alerts
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