Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1978-03-30
1978-12-05
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
156219, 156245, 156252, 156306, 181290, 264321, 296137A, 428158, 428213, 428313, 428315, B62D 2506, B32B 310, B32B 326
Patent
active
041286820
ABSTRACT:
Auto ceiling panel with an improved sound-absorbing effect which is obtained by thermally fusing a polyethylene foam with numerous small holes and another polyethylene foam with numerous large holes with a metal lath sandwiched between them; and its manufacturing method.
REFERENCES:
patent: 3647588 (1972-03-01), Greig
patent: 3697126 (1972-10-01), Tiffin et al.
patent: 3954537 (1976-05-01), Alfter et al.
patent: 3966526 (1976-06-01), Doerfling
patent: 4073991 (1978-02-01), Focht
Nomura Takao
Sakamoto Tatsuo
Umemoto Yoshiro
Toyota Jidosha Kogyo Kabushiki Kaisha
Van Balen William J.
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