Coupling element for connecting the flanged ends of ducts

Details Coupling element for connecting the flanged ends of ducts Coupling element for connecting the flanged ends of ducts

1990-06-22

1993-04-27

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Patent

active

D03351734

REFERENCES:
patent: 3023032 (1962-02-01), Johnston et al.
patent: 3338599 (1967-08-01), Hallman
patent: 3677517 (1972-07-01), Root et al.
patent: 4077434 (1978-03-01), Sieckert et al.
patent: 4564227 (1986-01-01), Murck

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