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BE896071A
|
|
Manhole cover and frame - has rebated frame seat with upward facing inclined bottom riser with tongue and groove seal shelf interface
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BE896072A
|
|
Frame for manhole cover - uses openings and notches in outer leg to allow flow of concrete into inner cavity
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DK16083D0
|
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Cover and frame for a street or down bridge
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DK466782A
|
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Frame measures to support cover or grid and cover for use in frame
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DK462682A
|
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PROCEDURE IN ASSEMBLY OF A FRAME OF A ACCESSORIES OR A MANHOLE AND Aggregate TO EXERCISE THE PROCEDURE
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GB2084684A
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Methods of connection together frame sections
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