489654-A is referenced by 4 patents.

A dialysis apparatus comprises two membranes separated by wire sieves or perforated corrugated sheets, the whole being spirally wound to form two adjacent spiral chambers 3, 8, through which the liquids flow in opposite directions. The spiral is enclosed in a cylindrical container 16, and the bottoms of the chambers are sealed by immersion in paraffin wax or an inert mud of quartz flour &c.

Title
Process and apparatus for conducting dialytic operations
Application Number
GB19370002801 19370130
Publication Number
489654 (A)
Application Date
January 30, 1937
Publication Date
August 2, 1938
Assignee
Ig Farbenindustrie
IPC
C01D 01/00
C01D 01/38
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