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Title: US2622693 - Text Title unavailable - see image for title

Inventor: Leslie

Issue Date: 1952-12

Current U.S. Class: 181/143: ACOUSTICS; MOVING SOUND PRODUCER OR DEFLECTOR
084/374: MUSIC; INSTRUMENTS; Wind; Reed organs; Fan tremolos


Forward References: 1 patent references this one
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Patent  Pub.Date  Inventor Assignee Title
Buy PDF- 7pp US3726358 1973-04-10 Hiyama; Ryu Nippon Gakki Seizo Kabushiki Kaisha ROTARY LOUDSPEAKER


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