USD289058SExpiredUtility
Refrigeration line size calculator
Individually held — no corporate assignee on recordPriority: Dec 13, 1984Filed: Dec 13, 1984Granted: Mar 31, 1987
Est. expiryDec 13, 2004(expired)· nominal 20-yr term from priority
Inventors:Michael T. Alberts
17
PatentIndex Score
2
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a refrigeration line size calculator, substantially as shown and described.
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