Static structures (e.g. – buildings) – Wall – ceiling – floor – or roof designed for ventilation or... – With the vent or drain entirely along at least one...
Patent
1993-04-27
1995-01-03
Friedman, Carl D.
Static structures (e.g., buildings)
Wall, ceiling, floor, or roof designed for ventilation or...
With the vent or drain entirely along at least one...
52505, 52408, 52604, 52605, 52606, E04B 500, E04B 700, E04C 139, E04D 324
Patent
active
053774680
ABSTRACT:
A protected-membrane roof paving system and method of constructing same. Rectangular ballast blocks are laid in rows and interlocked by tongue and groove edge faces. The adjacent blocks in each row form labyrinthine channels between their edge faces for drainage and equalization of air pressure above and below the blocks.
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Canfield Robert J.
Friedman Carl D.
Hanover Architectural Products, Inc.
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