US3696578A - Floor panel for an elevated floor assembly - Google Patents

Floor panel for an elevated floor assembly Download PDF

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Publication number
US3696578A
US3696578A US17225A US3696578DA US3696578A US 3696578 A US3696578 A US 3696578A US 17225 A US17225 A US 17225A US 3696578D A US3696578D A US 3696578DA US 3696578 A US3696578 A US 3696578A
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United States
Prior art keywords
panel
sheet
ribs
top sheet
rims
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US17225A
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English (en)
Inventor
Eugene L Swensen
Franklin E Gibson
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Donn Inc
Original Assignee
LISKEY ALUMINUM Inc
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Filing date
Publication date
Application filed by LISKEY ALUMINUM Inc filed Critical LISKEY ALUMINUM Inc
Application granted granted Critical
Publication of US3696578A publication Critical patent/US3696578A/en
Assigned to DONN INCORPORATED, A CORP OF OH. reassignment DONN INCORPORATED, A CORP OF OH. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LISKEY ARCHITECTURAL MFG.INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02405—Floor panels
    • E04F15/02417—Floor panels made of box-like elements

Definitions

  • FLOOR PANEL FOR AN ELEVATED FLOOR ASSEMBLY [72] Inventors: Eugene L. Swensen, Rockville; Franklin E. Gibson, Baltimore, both of Md.
  • the bottom plate is formed to present a plurality of radial ribs that intersect one another centrally of the panel and extend to merge with peripheral ribs that edge the four sides of the panel.
  • the sides of the ribs web the sheet and plate together to form hollow box sectioned beams as peripheral ribs and radial ribs of the panel.
  • a cross-shaped stiffener with ridges is positioned between the sheet and the plate. The ridges are oriented to coextend with the radial ribs and the side edges of the stiffener are secured to the underside of the top sheet.
  • a trim member is wedged between the edge of the sheet and the rim of the plate to abut the tread surface.
  • the panel can be perforated to permit air circulation and the perforations do not cause any significant loss of structural strength.
  • Elevated access floors are widely used in computer rooms to provide sub fioor space for the multitude of wires, cables and accessory equipment associated with the machinery that rests on the access floors.
  • the panels which make up such floors must be strong enough to support heavy machinery, yet readily removable so that access can be had to all parts of the electrical equipment.
  • the access floor panels define an air plenum with the original floor so that air at controlled temperature and humidity can be circulated to all parts of the computer equipment.
  • the panel of the instant invention in either its perforated or non-perforated form, is designed to be particularly resistant to deformation and deflection under heavy load so that the integrity of the entire floor is preserved even after heavy machinery is installed. Further, the panel disclosed herein can be used with or without stringers bridging the pedestals depending on the intended use of the access floor.
  • FIG. I is a bottom plan view of the panel showing the radial and peripheral ribs formed in the lower plate;
  • FIG. 2 is a section view taken along lines 2--2 of FIG. 1 showing the edge configuration of a finished panel
  • FIG. 3 is a section view taken along lines 3--3 of FIG. 1 showing the radial rib configuration of the lower plate as attached to a finished panel;
  • FIG. 4 is a section view taken along lines 4-4 of FIG. 1 showing the relative position of the internal stiffener inside a radial rib of the lower plate and as attached to the upper sheet;
  • FIG. 5 is a top plan view of the panel with the top sheet removed to show the cruciform shape and position of the intermediate stiffener.
  • FIG. 6 is a section view showing the interfitting edges of abutting panels on a stringer
  • FIG. 7 is a section view showing the interfitting edges of abutting panels on a pedestal cap
  • FIG. 8 is a schematic drawing of the strengthened panel with beam construction
  • FIG. 9 is a bottom pan view of the FIG. I panel which has been perforated.
  • FIG. 10 is a section view taken along the lines IO 10 of FIG. 9.
  • the floor panel 1 is shown in plan view with a drawn bottom plate 10 in which eight radial raised ribs 3 intersect in the approximate center 5 of the panel.
  • the ribs 3 extend outwardly from center 5 to merge with peripheral raised ribs 7 which border the peripheries of the panel.
  • the ribs 3 and 7 form undulations in which a plurality (preferably eight) of right triangles are formed.
  • the interior spaces 20 of the triangles overlie, and are attached to top sheet 11, preferably by spot welding in the instance of steel. Sloped webs 30 of the ribs interconnect the apices 31 of ribs 3 with the spaces 20 and sheet 1 1.
  • peripheral ribs 7 are formed along the edges of the panel and top sheet l 1 bridges the ribs, being welded or otherwise attached to plate 10 on both sides of ribs 7 to form box beams.
  • Each side of plate 10 has an outer rim 34 that is bent in a hook shape to terminate adjacent the outer edge of sheet 11.
  • a snapon trim member 13 is wedged between the rim 34 and the edge of sheet 11 to abut tread surface 12 adhered to sheet 11 and present a continuous, smooth upper surface.
  • the hook-shaped rims are split to simplify production.
  • radial rib 3 is shown in the form of a U- shape with spot welds x on either side of the rib 3 where sheet 11 and plate 10 meet adjacent the ribs.
  • boxed beams are inherently formed and reduce load deflection.
  • a stiffener 14 is shown with four equally spaced apart arms 40 with ridges 15 in cruciform shape.
  • the arms 40 coextend within corresponding ribs 3 for about one third or one half the lengths of the ribs 3.
  • the stiffener 14 is preferably welded to the top sheet 11 as seen in FIG. 4.
  • the spot welds x seen in FIG. 5 generally show suitable locations of same, the top sheet 11 being removed to show stiffener 14 which is sandwiched between sheet 11 and plate within the hollow, central panel section.
  • the primary purpose of the internal stiffener 14 is to provide local support or added stiffness to that central triangular indentations of the lower plate 10.
  • the internal stiffener 14 when attached to the top sheet 1 1 provides another box beam for approximately one third or more of the overall panel span, which is normally 24 inches.
  • the combination of sheets 11 and 14 then, form individual beams in the central section of the panel where the sloping webs of the radial ribs 3 transition and disappear.
  • the unique combinations of members 10, l1 and 14 represent, in total, a hybrid beam construction shown schematically in FIG. 8 where the central section is a beam formed of the top sheet 11 and the stiffener 14; the outer sections are beams formed by the lower sheet 10 and the top sheet 1 1, and the flat central section 10a of the formed bottom plate 10 becomes a true tension member.
  • FIG. 6 two abutting panels 1 are shown in section similar to FIG. 2, with their hook-shaped rims 34 interfitting over the indented top 350 of stringer 31a.
  • the stringer 31a can be the same as that disclosed in the aforementioned copending application filed Jan. 6, 1970.
  • FIG. 7 the same two panels 1 are shown closely abutting one another on the pedestal cap 110 of pedestal 21 when no stringers are used.
  • hook-shaped rims 34 interfit with matching faces on the understructure supports to insure the proper spacing of panels and pedestals.
  • the pedestals can be the same as disclosed in the above-listed copending application. It will be noted that the rims 34 are extended from ribs 7 to leave a margin 19 around the perimeter of the panel which forms a lip that is rested on the supporting understructure.
  • the sheet and plate are each made of steel in the interests of strength, the former being about 0.07 inches and the latter about 0.06 inches.
  • the thicknesses of the structural members can be varied depending on the intended use of the panels.
  • the depth of the ribs 3 and 7 can be about I inch or more, preferably 1.25 or more.
  • the trim member 13 as well as tread surface be of the vinyl material widely used in the floor til'et'rade.
  • the primary purpose of the combinations of sheet 10 and 11 when so attached is the formation of individual structural members.
  • a secondary but extremely important feature of the top sheet 1 l is to provide a flat and smooth surface to which a tile or tread surface 12 can be adhered. It is considered important that this sheet 11 remain completely flat, that is, with no turned down flanges or other protuberances, in order that it may provide support to the full extremity of the tile surface.
  • a secondary but vital added function is the unique manner in which the edge of the plate is utilized to retain the edge trim plastic 13 as shown in FIG. 2. It can be seen that'the short upturned flange at the extreme edge of the panel is produced flush with the edge trim 13 thereby protecting it from damage when a panel is placed in position within a floor system, even when roughly handled.
  • edge trim 13 is of resilient material so that the bottom ends can be pinched together and sandwiched between plate 10 and sheet 11.
  • the vertical sides of trim l3 abut the panel to resist horizontal motion and opposite horizontal surfaces of the trim abut sheet 11 to prevent vertical motion.
  • trim 13 is restrained from dislodgement upward by the configuration of trim 13 which locks under the lower surface of the top sheet 11.
  • the panel of FIG. 1 has been perforated so that when similar panels are assembled to form an elevated floor, air of controlled temperature and humidity can be circulated between the base floor and the elevated floor to pass through the perforations. Only one triangular space 20 is shown perforated but as many of the spaces 20 as desired can have perforations 40 formed therein. Further, only some of the panels may need to be formed with perforations depending on the effect desired in the assembled floor.
  • the perforations 40 are preferably formed by punching holes through the finished or completedv panel so that the tile 12 or other tread surface, including carpeting, is also perforated and the panel is ready for use.
  • the holes are best made in the spaces 20 of the triangles so that none of the ribs 3 or 7, which are load bearing beams, are weakened structurally. Also, by punching the panels at those locations where the tread surface, the plate 10 and top sheet 11 meet, neither the stiffener nor the center are perforated and most, if not all, of the spot welds remain intact.
  • the perforations 40 can be formed in attractive patterns, and the individual perforations can-be about A inch in diameter with centers of adjacent perforations being about one-half inch apart. Obviously, however, other dimensions are suitable and the standard suction cup lifting handle known in the trade can be used to lift the panels at their centers.
  • the perforations 40 can be dampered by triangular-shaped pieces of plastic that are placed to overlie the spaces 20.
  • a modular floor panel comprising a substantially flat top sheet and a bottom plate being formed with a plurality of raised rib means with side webs that space and connect apices of said rib means relative to said sheet, said rib means including radial ribs that intersect at the approximate center of said panel and extend towards the edges thereof, the intersection of said ribs being spaced apart from said sheet to define a hollow central, panel section, an internal stifiener secured to said panel within said hollow section and between said sheet and said plate, said stiffener being cruciform in configuration and having radial arms with raised ridges that form box beams to underlie and coextend with said radial ribs and said stiffener being fixed to the undersurface of said top sheet to terminate short of the outer periphery of said panel, said bottom plate having rims which define the outer perimeter of said panel and said top sheet having outer edges located within said outer perimeter.
  • said rib means includes rib elements that border the peripheries of said panel, said radial ribs intersecting at the approximate center of said panel and extending to merge with said rib elements whereby a plurality of right angles are formed, the internal areas of which meet and are secured to the undersurface of said top sheet.
  • a modular floor panel comprising a substantially flat top sheet with outer edges and an underlying bottom plate with reinforcing rib means and integral lip means with side rims, said rib means being bent upwardly forming said lip means and side rims in a general hook shape, said side rims extending below said top sheet to leave a space, said side rims terminating adjacent the outer edges of said top sheet leaving a horizontal space between said rims and said outer edges, the hook-shaped portion of said lip means being load bearing, a resilient trim member being locked in the space between said rims and edges, a tread surface overlying said sheet to abut and be bordered by said trim member to form a smooth and level tread surface.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Carpets (AREA)
US17225A 1970-03-06 1970-03-06 Floor panel for an elevated floor assembly Expired - Lifetime US3696578A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1722570A 1970-03-06 1970-03-06

Publications (1)

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US3696578A true US3696578A (en) 1972-10-10

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US17225A Expired - Lifetime US3696578A (en) 1970-03-06 1970-03-06 Floor panel for an elevated floor assembly

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US (1) US3696578A (enExample)
BE (1) BE760654A (enExample)
CA (1) CA926077A (enExample)
FR (1) FR2083864A5 (enExample)
GB (1) GB1322047A (enExample)

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943674A (en) * 1972-11-14 1976-03-16 Liskey Aluminum Inc. Elevated floor assembly with releasable tie means connecting the panel sides
US4035967A (en) * 1972-12-22 1977-07-19 A. R. I. Propaflor Limited Raised floor panels
US4074488A (en) * 1974-06-05 1978-02-21 Liskey Archectural Mfg. Inc. Elevated floor assembly
USD258463S (en) 1978-05-15 1981-03-03 Emmer David E Combined solar heat collector and cover for swimming pools
US4276873A (en) * 1979-06-25 1981-07-07 Alpha Solarco Inc. Reflectors for solar energy collectors
US4279966A (en) * 1978-04-10 1981-07-21 Bridgestone Tire Co., Ltd. Pressure resistant square panel
US4295319A (en) * 1979-10-31 1981-10-20 G. H. Products, Inc. Floor panel
US4447998A (en) * 1982-03-05 1984-05-15 Griffin Kary A Floor panel
US4573304A (en) * 1983-11-25 1986-03-04 Donn Incorporated Honeycomb floor panel and the like
US4578910A (en) * 1984-07-02 1986-04-01 Donn Incorporated Elevated floor panel system
US4594833A (en) * 1983-11-25 1986-06-17 Donn Incorporated Honeycomb floor panel and the like
EP0190374A1 (de) * 1985-02-02 1986-08-13 Ermossa AG Freitragende Bodenplatte
US4618181A (en) * 1984-03-15 1986-10-21 Mazda Motor Corporation Automobile roof structure
US4621468A (en) * 1984-07-11 1986-11-11 Donn Incorporated Concrete metal-backed access floor panel
US4625491A (en) * 1986-01-13 1986-12-02 Donn Incorporated Elevated floor panel with integral trim
US4745715A (en) * 1987-03-23 1988-05-24 Farley Metals, Inc. Elevated floor plate
US4748789A (en) * 1986-07-21 1988-06-07 Hedley Gilbert P Access floor panel
US4825603A (en) * 1987-03-23 1989-05-02 Farley, Inc. Elevated floor plate
US4843781A (en) * 1986-07-18 1989-07-04 Chase Iii Francis H Composite access floor panel
US4856256A (en) * 1986-09-10 1989-08-15 O M Kiki Co., Ltd. Free access floor panel
US4901490A (en) * 1984-12-17 1990-02-20 Gabalan Corporation Raised flooring panel and raised flooring assemblies
USD306350S (en) 1987-03-23 1990-02-27 Farley, Inc. Elevated floor plate
US5115621A (en) * 1987-09-10 1992-05-26 O M Kiki Co., Ltd. Free access floor panel
USD342330S (en) 1991-12-04 1993-12-14 O M Kiki Co., Ltd. Free access floor panel
US5386670A (en) * 1990-11-29 1995-02-07 Kabushiki Kaisha Toshiba Method for manufacturing system floor and floor base for system floor
US5927042A (en) * 1997-07-24 1999-07-27 Last; Harry J. Composite beam enclosure structure
US6481175B2 (en) * 1999-02-08 2002-11-19 Rocheway Pty. Ltd. Structural member
US6547310B2 (en) * 1997-10-31 2003-04-15 Eugene A. Myers Truck bed cover
US6584739B2 (en) 2000-03-07 2003-07-01 Maxcess Technologies, Inc. Applied edge trim
US6622443B2 (en) 1999-05-25 2003-09-23 Interface, Inc. Trim for high pressure laminate and other decorative floor coverings
US6637161B1 (en) 2000-11-28 2003-10-28 Steelcase Development Corporation Floor system
US20040023006A1 (en) * 2002-08-05 2004-02-05 Bruce Mead Printed border
US20040040257A1 (en) * 2002-08-29 2004-03-04 Bui Thuan H. Lightweight modular cementitious panel/tile for use in construction
US6797219B1 (en) 2000-11-28 2004-09-28 Steelcase Development Corporation Method for manufacture of floor panels
US20050066597A1 (en) * 2003-09-26 2005-03-31 Yao-Chung Chen Structure of seamless raised acces floor
US20050246984A1 (en) * 2004-04-13 2005-11-10 Sam Colosimo Modular access floor system with airseal gasket
US20070284907A1 (en) * 2006-06-09 2007-12-13 Shiawdar Yue Reinforced tonneau cover
US20080236085A1 (en) * 2007-03-29 2008-10-02 Stronggo Llc Tiles With Bottom-Side Extensions and Method for Installation
US20090134658A1 (en) * 2007-11-26 2009-05-28 Fadi Hanna Water shield for vehicle door
DE102008012215A1 (de) * 2008-03-03 2009-09-10 SCHäFER WERKE GMBH Doppelbodensystem in Rechenzentren und Serverräumen, insbesondere als Druckboden mit Belüftungsversorgung
USD631422S1 (en) 2010-03-12 2011-01-25 Kayser Kenneth W Truck bed tonneau
US20110221227A1 (en) * 2010-03-12 2011-09-15 Kayser Kenneth W Truck Bed Tonneau and Method of Manufacturing a Tonneau
US20120286092A1 (en) * 2011-05-11 2012-11-15 Lu Roberto F Reconfigurable floorboard system
US8726612B2 (en) * 2008-04-29 2014-05-20 Steven G. Lomske Modular panel
USD742123S1 (en) * 2014-01-17 2015-11-03 Shannon Specialty Floors, Inc. Floor tile
USD806276S1 (en) * 2015-08-04 2017-12-26 Progress Profiles Spa Thermal insulating panel for underfloor heating
USD806911S1 (en) * 2015-03-17 2018-01-02 Silcart S.P.A. Floor underlayment
USD891120S1 (en) * 2017-09-25 2020-07-28 Sung Joo D&D, Inc Fabric
US11293194B2 (en) 2016-06-24 2022-04-05 Apache Industrial Services, Inc Modular ledgers of an integrated construction system
US11306492B2 (en) 2016-06-24 2022-04-19 Apache Industrial Services, Inc Load bearing components and safety deck of an integrated construction system
US11428015B2 (en) 2020-09-03 2022-08-30 Wearwell, Llc Modular platform system and method of assembly
US11624196B2 (en) * 2016-06-24 2023-04-11 Apache Industrial Services, Inc Connector end fitting for an integrated construction system
US11976483B2 (en) 2016-06-24 2024-05-07 Apache Industrial Services, Inc Modular posts of an integrated construction system
US20240287820A1 (en) * 2023-02-23 2024-08-29 Ryno Ltd Fire resistant membrane for flooring system
US12116779B2 (en) 2016-06-24 2024-10-15 Apache Industrial Services, Inc Formwork system
US12195961B2 (en) 2016-06-24 2025-01-14 Apache Industrial Services, Inc. Formwork system

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NL184023C (nl) * 1975-08-26 Mahle Gmbh Vierkante vrijdragende ventileerplaat voor een dubbele vloer.
GB2159550A (en) * 1984-03-29 1985-12-04 Mech Tool Engineering Ltd Steel flooring
GB8523810D0 (en) * 1985-09-27 1985-10-30 Intek Floors Ltd Concrete slab
GB8713183D0 (en) * 1987-06-05 1987-07-08 Steelden Mfg Ltd Access floor structures

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FR832231A (fr) * 1937-01-19 1938-09-23 Perfectionnements apportés aux parois composites, notamment aux surfaces métalliques, et aux procédés pour leur établissement
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Cited By (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943674A (en) * 1972-11-14 1976-03-16 Liskey Aluminum Inc. Elevated floor assembly with releasable tie means connecting the panel sides
US4035967A (en) * 1972-12-22 1977-07-19 A. R. I. Propaflor Limited Raised floor panels
US4074488A (en) * 1974-06-05 1978-02-21 Liskey Archectural Mfg. Inc. Elevated floor assembly
US4279966A (en) * 1978-04-10 1981-07-21 Bridgestone Tire Co., Ltd. Pressure resistant square panel
USD258463S (en) 1978-05-15 1981-03-03 Emmer David E Combined solar heat collector and cover for swimming pools
US4276873A (en) * 1979-06-25 1981-07-07 Alpha Solarco Inc. Reflectors for solar energy collectors
US4295319A (en) * 1979-10-31 1981-10-20 G. H. Products, Inc. Floor panel
US4447998A (en) * 1982-03-05 1984-05-15 Griffin Kary A Floor panel
US4573304A (en) * 1983-11-25 1986-03-04 Donn Incorporated Honeycomb floor panel and the like
US4594833A (en) * 1983-11-25 1986-06-17 Donn Incorporated Honeycomb floor panel and the like
US4618181A (en) * 1984-03-15 1986-10-21 Mazda Motor Corporation Automobile roof structure
US4578910A (en) * 1984-07-02 1986-04-01 Donn Incorporated Elevated floor panel system
US4621468A (en) * 1984-07-11 1986-11-11 Donn Incorporated Concrete metal-backed access floor panel
US4901490A (en) * 1984-12-17 1990-02-20 Gabalan Corporation Raised flooring panel and raised flooring assemblies
EP0190374A1 (de) * 1985-02-02 1986-08-13 Ermossa AG Freitragende Bodenplatte
US4625491A (en) * 1986-01-13 1986-12-02 Donn Incorporated Elevated floor panel with integral trim
US4843781A (en) * 1986-07-18 1989-07-04 Chase Iii Francis H Composite access floor panel
US4748789A (en) * 1986-07-21 1988-06-07 Hedley Gilbert P Access floor panel
US4856256A (en) * 1986-09-10 1989-08-15 O M Kiki Co., Ltd. Free access floor panel
US4825603A (en) * 1987-03-23 1989-05-02 Farley, Inc. Elevated floor plate
WO1988007612A1 (en) * 1987-03-23 1988-10-06 Farley Metals, Inc. Elevated floor plate
US4745715A (en) * 1987-03-23 1988-05-24 Farley Metals, Inc. Elevated floor plate
USD306350S (en) 1987-03-23 1990-02-27 Farley, Inc. Elevated floor plate
US5115621A (en) * 1987-09-10 1992-05-26 O M Kiki Co., Ltd. Free access floor panel
US5386670A (en) * 1990-11-29 1995-02-07 Kabushiki Kaisha Toshiba Method for manufacturing system floor and floor base for system floor
USD342330S (en) 1991-12-04 1993-12-14 O M Kiki Co., Ltd. Free access floor panel
US5927042A (en) * 1997-07-24 1999-07-27 Last; Harry J. Composite beam enclosure structure
US6547310B2 (en) * 1997-10-31 2003-04-15 Eugene A. Myers Truck bed cover
US20030168878A1 (en) * 1997-10-31 2003-09-11 Myers Eugene A. Truck bed cover
USRE41724E1 (en) 1997-10-31 2010-09-21 E. D. Industries, Inc. Truck bed cover
US6857683B2 (en) 1997-10-31 2005-02-22 Eugene A. Myers Truck bed cover
US6481175B2 (en) * 1999-02-08 2002-11-19 Rocheway Pty. Ltd. Structural member
US6622443B2 (en) 1999-05-25 2003-09-23 Interface, Inc. Trim for high pressure laminate and other decorative floor coverings
US6584739B2 (en) 2000-03-07 2003-07-01 Maxcess Technologies, Inc. Applied edge trim
US6637161B1 (en) 2000-11-28 2003-10-28 Steelcase Development Corporation Floor system
US6797219B1 (en) 2000-11-28 2004-09-28 Steelcase Development Corporation Method for manufacture of floor panels
US20040023006A1 (en) * 2002-08-05 2004-02-05 Bruce Mead Printed border
US7531055B2 (en) * 2002-08-05 2009-05-12 Kingspan Holdings (Irl) Ltd. Printed border
US20070095452A1 (en) * 2002-08-05 2007-05-03 Bruce Mead Printed border
EP1546484A4 (en) * 2002-08-29 2007-03-21 Thuan H Bui PANEL / TILE IN LIGHT AND MODULAR CEMENT, TO BE USED IN CONSTRUCTION
US20040040256A1 (en) * 2002-08-29 2004-03-04 Bui Thuan H. Lightweight modular cementitious panel/tile for use in construction
WO2004020758A3 (en) * 2002-08-29 2004-06-03 Thuan H Bui Lightweight modular cementitious panel/tile for use in construction
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Also Published As

Publication number Publication date
FR2083864A5 (enExample) 1971-12-17
GB1322047A (en) 1973-07-04
CA926077A (en) 1973-05-15
BE760654A (fr) 1971-05-27

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