Backing ring for a pipe coupling

Details Backing ring for a pipe coupling Backing ring for a pipe coupling

1983-09-09

1986-05-27

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Patent

active

D02840227

REFERENCES:
patent: D16160 (1885-07-01), Crano
patent: D208388 (1967-08-01), Graham
patent: D240428 (1976-07-01), Hoffman
patent: 1940729 (1933-12-01), Pfefferle
patent: 2288904 (1942-07-01), Hudson
patent: 2412487 (1946-12-01), Amley et al.
patent: 2792240 (1957-05-01), Risley et al.
patent: 3065000 (1962-11-01), Stanton
patent: 3433509 (1969-03-01), Jeffery et al.

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