Granted Patent
S1
US 785,091 · App. 29/548,317 · Granted Apr 25, 2017
Drummer training apparatus
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Claims (1)
The ornamental design for a drummer training apparatus, as shown and described.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded May 16, 2019
From: SUNSTREAM TECHNOLOGY, INC
To: ADVANCE ENERGY SOLUTIONS
Reel/Frame 049195/0763 →