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A. & T. Development Corporation Patents
A. & T. Development Corporation
Philadelphia, PA
No. of patents:

Patent Number Title Of Patent Date Issued
4141798 Solar still February 27, 1979
A solar still includes a pair of parallel dikes separated by a ditch, a first sheet overlying the ditch and pair of parallel dikes, the sheet having a pair of edges arranged substantially parallel to, and outside, the dikes, and a second sheet overlying the first sheet, the second sheet
4040216 Pillars, walls and buildings August 9, 1977
A structural member comprises a soil-retaining sheet having two antipodal edges, means for joining the two antipodal edges when proximately positioned to maintain the sheet in a tubular configuration, and a column of soil retained within the tubular configuration of the sheet. One or

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