Patent
1977-03-08
1978-08-15
Camby, John J.
98 19, 98 42R, 98116, 52200, 49 62, B60H 126
Patent
active
041063996
ABSTRACT:
Insulation apparatus for attachment to exterior surfaces of a roof ventilator, particularly an operating roof ventilator wherein an upper portion thereof is hingeably mounted to a fixed lower portion thereof, the invention comprises a cover formed of insulative material which fits essentially flushly over the exterior surfaces of the ventilator.
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patent: 3934383 (1976-01-01), Perry et al.
Camby John J.
Jacobson Harvey B.
O#Brien Clarence A.
Yuen Henry C.
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