IP Library › Granted Patent US 857,646
Granted Patent S1
US 857,646 · App. 29/613,007 · Granted Aug 27, 2019

Audio amplifier

Inventors: Michael Eckstein (Backnang, DE); Fritz Wurster (Backnang, DE)
Assignee: D&B AUDIOTECHNIK GMBH
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Quick Facts
Patent No.
US 857,646
App. No.
29/613,007
Granted
Aug 27, 2019
Kind
S1
Claims (1)

The ornamental design for an audio amplifier, as shown and described.

Assignments (3)
DE-MERGER (SPIN-OFF) AND CHANGE OF NAME Recorded Sep 12, 2019
From: D&B AUDIOTECHNIK GMBH
To: D&B AUDIOTECHNIK GMBH & CO. KG
Reel/Frame 050369/0411 →
CORRECTIVE ASSIGNMENT TO CORRECT THE DOC DATE OF THE FIRST ASSIGNOR PREVIOUSLY RECORDED ON REEL 043212 FRAME 0471. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Aug 9, 2017
From: ECKSTEIN, MICHAEL; WURSTER, FRITZ
To: D&B AUDIOTECHNIK GMBH
Reel/Frame 043502/0150 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 7, 2017
From: ECKSTEIN, MICHAEL; WURSTER, FRITZ
To: D&B AUDIOTECHNIK GMBH
Reel/Frame 043212/0471 →
Priority Claims (4)
EM 004028165-0001 · Jun 1, 2017 · regional
EM 004028165-0002 · Jun 1, 2017 · regional
EM 004028165-0003 · Jun 1, 2017 · regional
EM 004028165-0004 · Jun 1, 2017 · regional