USD503379SExpiredUtility
Variable speed drive for electric motors
Est. expiryApr 5, 2022(expired)· nominal 20-yr term from priority
Inventors:Daniel Gheno
58
PatentIndex Score
12
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a variable speed drive for electric motors, as shown and described.
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