Drain construction

Details Drain construction Drain construction

1999-02-26

2000-02-22

Douglas, Alan P.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Fitting

2301

Patent

active

D04211022

REFERENCES:
patent: 1577464 (1926-03-01), High
patent: 1914780 (1933-06-01), Lichamer
patent: 4126404 (1978-11-01), Ferns

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