Drain grating

Details Drain grating Drain grating

1991-07-16

1993-09-14

Word, A. Hugo

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D25152

Patent

active

D03394158

REFERENCES:
patent: D33201 (1900-09-01), Truesdell
patent: D263511 (1982-03-01), Bartscher
patent: D269380 (1983-06-01), d'Avila
patent: 1494823 (1924-05-01), Tappen
patent: 1665846 (1928-04-01), Denni
patent: 2701027 (1955-02-01), Scoville
patent: 4367142 (1983-01-01), Blecher
patent: 4515498 (1985-05-01), Thomann et al.
patent: 4630962 (1986-12-01), Thomann et al.
patent: 4940359 (1990-07-01), Van Duyn et al.
patent: 5024550 (1991-06-01), Mainville

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