Floor register

Details Floor register Floor register

1995-03-07

1997-04-15

Lucas, Susan J.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Patent

active

D03788520

REFERENCES:
patent: D21800 (1892-08-01), Joss
patent: D165244 (1951-11-01), Rendessy
patent: D188077 (1960-05-01), Van Rijn
patent: D269806 (1983-07-01), Syme
patent: 492233 (1893-02-01), Reese
Harrington & King Perforating Co. Cat; 1932, p. 13, grille with partholes Perforated Metals Boxes.
Harrington & King Perforating Co Cat, 1936 p. 10, Diagonal Lattice Perforated Metals Boxes.

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