USD427570SExpiredUtility
Quartz fin heat retaining tube
Est. expiryJan 31, 2017(expired)· nominal 20-yr term from priority
Inventors:Katsutoshi Ishii
63
PatentIndex Score
12
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedI claim the ornamental design for quartz fin heat retaining tube, as shown and described.
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