Drain tile and pile fabric filter sleeve

Details Drain tile and pile fabric filter sleeve Drain tile and pile fabric filter sleeve

1979-11-23

1981-09-08

Spear, Jr., Frank A.

Liquid purification or separation

Structural installation

Geographic

210489, 2104971, 210507, 405 45, E02B 1300, B01D 2914

Patent

active

042883210

ABSTRACT:
A land drainage line having a tube or the like forming a conduit through which water will be drained and a knitted pile fabric filter sleeve around the drainage line.

REFERENCES:
patent: 2546874 (1951-03-01), Siegrist
patent: 3062379 (1962-11-01), Bryan
patent: 3830373 (1974-08-01), Sixt
patent: 3917530 (1975-11-01), Boske
patent: 3946762 (1976-03-01), Green
patent: 3976578 (1976-08-01), Beane
patent: 4019326 (1977-04-01), Harveling
patent: 4180464 (1974-12-01), Beane

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