Wells – Receptacles – With separate air chamber having openable passage
Patent
1973-12-12
1976-02-24
Shapiro, Jacob
Wells
Receptacles
With separate air chamber having openable passage
61 7, 61 36R, 166293, 404 72, 427136, E02D 300, C09J 304, E02B 502
Patent
active
039396622
ABSTRACT:
Liquid impervious surface structures are formed by permeating a fabric and a portion of an earthen foundation with an aqueous gel wherein the permeated earthen foundation is covered by the permeated fabric.
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Phillips Petroleum Company
Shapiro Jacob
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