Static structures (e.g. – buildings) – Wall – ceiling – floor – or roof designed for ventilation or... – With the vent or drain entirely along at least one...
Reexamination Certificate
2003-12-11
2010-06-08
Canfield, Robert J (Department: 3635)
Static structures (e.g., buildings)
Wall, ceiling, floor, or roof designed for ventilation or...
With the vent or drain entirely along at least one...
C052S169500, C052S302100, C052S302600
Reexamination Certificate
active
07730685
ABSTRACT:
A mortar and debris collection device for insertion into lower portions of a cavity defined between outer and inner wall structures of a masonry cavity wall employs two relatively rigid mat elements each designed to permit moisture to pass readily therethrough. Bottom edge regions of the two mat elements are hinge connected to permit the mat elements to be folded into closely overlying relationship.
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Canfield Robert J
Keene Building Products Co., Inc.
Renner , Otto, Boisselle & Sklar, LLP
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