Static structures (e.g. – buildings) – Wall – ceiling – or floor designed for utilities – Having a passageway through the entire wall – ceiling – or...
Reexamination Certificate
2006-10-03
2006-10-03
Nelson, Jr., Milton (Department: 3636)
Static structures (e.g., buildings)
Wall, ceiling, or floor designed for utilities
Having a passageway through the entire wall, ceiling, or...
C052S784110
Reexamination Certificate
active
07114303
ABSTRACT:
A fire stopping apparatus for fire stopping a through-penetration includes fire stop material arranged within the through-penetration, a frame arranged adjacent the top opening of the through-penetration, and a plurality of slats arranged on the frame adjacent the through-penetration top opening.
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Cordts Brandon L.
Miller Stephen A.
Reier Matthew D.
3M Innovative Properties Company
Jr. Milton Nelson
Patchett David B.
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