USD678619SActiveUtility
Welding auto-darkening filter assembly
Est. expiryOct 26, 2030(~4.3 yrs left)· nominal 20-yr term from priority
60
PatentIndex Score
12
Cited by
49
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a welding auto-darkening filter assembly, as shown and described.
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