Floor drain

Details Floor drain Floor drain

1982-12-21

1985-10-08

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

13724729, 13724751

Patent

active

D02809257

REFERENCES:
patent: 1136548 (1915-04-01), Moore
patent: 1301687 (1919-04-01), Grosvold
patent: 2531721 (1950-11-01), Brock
patent: 2770315 (1956-11-01), Powell
patent: 4031914 (1977-06-01), Neri

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