Helically wound lock-seam tube

Details Helically wound lock-seam tube Helically wound lock-seam tube

1995-03-08

1996-12-03

Coles, Doris V.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Fitting

Patent

active

D03761932

REFERENCES:
patent: 192079 (1877-06-01), Noble
patent: D213828 (1969-04-01), Blake
patent: 224228 (1880-02-01), Ritchie
patent: D296355 (1988-06-01), Kanao
patent: 470738 (1892-03-01), Bayles
patent: 683519 (1901-10-01), Taylor
patent: 2888043 (1959-05-01), Reid
patent: 4706481 (1987-11-01), Castricum
Pamphlet entitled "The Round Revolution" .COPYRGT.1993 Spiro International S.A., Switzerland.

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