F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
F24F 7/02 (2006.01) E04D 5/06 (2006.01)
Patent
CA 2233271
A roof ventilator fabricated from a corrugated plastic sheet material having at least one planar ply and a generally convoluted ply defining a grain comprises a plurality of panels formed from the corrugated plastic sheet material. The plurality of panels are generally stacked and connected to one another to form a vent section, the vent section having a longitudinal axis and being rolled in a direction generally parallel with the longitudinal axis so as to define a generally spiral configuration.
Kasner Gary P.
Morris Richard J.
Stoll Mark
Liberty Diversified Industries Inc.
Sim & Mcburney
LandOfFree
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