Sill vent for building foundations

Details Sill vent for building foundations Sill vent for building foundations

1993-12-22

1994-12-06

Lichtenstein, Lisa P.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D25 53

Patent

active

D03531937

REFERENCES:
patent: 4676145 (1987-06-01), Allred
patent: 4821628 (1989-04-01), Sarazen, Jr. et al.
McKinley Iron Works Adv. in Sweets 1962 Cat., p. 18, Register A, bottom left side of page.

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