Pipe coupling

Details Pipe coupling Pipe coupling

1992-03-16

1994-06-21

Reid, Stella

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Fitting

Patent

active

D03480976

REFERENCES:
patent: 149958 (1874-04-01), Smith
patent: 567231 (1896-09-01), Glauber
patent: 925762 (1909-06-01), Eager
patent: 2086007 (1937-07-01), Tompkins
patent: 2215318 (1940-09-01), Bristol
patent: 3222777 (1965-12-01), Rutter et al.
patent: 3825288 (1974-07-01), Maroschak
Brochure of Northern Pipe Products, GPK Products, Inc., undated but admitted to be prior art, not dated.

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