Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
  • E04C2/42—Gratings; Grid-like panels
  • E04C2/421—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction
  • E04C2/422—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern
  • E04C2/423—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern with notches
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F17/00—Vertical ducts; Channels, e.g. for drainage
  • E04F17/06—Light shafts, e.g. for cellars

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Roof Covering Using Slabs Or Stiff Sheets (AREA)
• Air-Flow Control Members (AREA)
• Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6657185

Family Applications (1)

Country Status (4)

• 1975
  • 1975-10-30 DE DE19757534557 patent/DE7534557U/de not_active Expired
• 1976
  • 1976-10-04 AT AT736376A patent/AT345532B/de not_active IP Right Cessation
  • 1976-10-12 CH CH1290376A patent/CH603939A5/xx not_active IP Right Cessation
  • 1976-10-13 FR FR7630770A patent/FR2329824A1/fr active Granted

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