File:051SketchPortfolio UJ MartinBolton.JPG: Revision history

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11 January 2013

  • curprev 11:5411:54, 11 January 2013‎ Martin Bolton talk contribs‎ 394 bytes +394‎ 051SketchPortfolio_UJ_MartinBolton Multi-functionality of the covering lid. The interior of the covering lid would remain clean as it is not exposed to contaminants. If this lid can be used as clean surface on which filter maintenance could take place...
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