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

D03788512

REFERENCES:
patent: D39663 (1908-11-01), Valentine
patent: 448141 (1891-03-01), Northen
Harrington & King Perforating Co Cat, 1925, p. 17, Style L2 Grille Perforated Metals Boxes.
Harrington & King Perforating Co Cat, 1932, p. 41, Style NL 45% Open Perforated Metals Box.
The Harrington & King Perforating Co, 1936 p. 11 Style L Perforated Metals Boxes.
Standard Stamping & Perforating Co., Design E1, 1948 Perforated Metals Boxes.

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