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Perforated acoustical attenuators

US Patent 5504281 · Granted Apr 2, 1996

Estimated economic value: $11,764,000 ⓘ

Assignee

3M

Inventors

Leland R. Whitney (31 patents)
Thomas J. Scanlan (10 patents)
Charles A. Marttila (28 patents)
Joseph G. Mandell (5 patents)

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