Heating device for roofs

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling

Design Patent

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Details

CD23S499000

Design Patent

active

D0514209

CLAIM:
The ornamental design for a heating device for roofs, as shown and described.

REFERENCES:
patent: 4081657 (1978-03-01), Stanford
patent: 4769526 (1988-09-01), Taouil
patent: 5878533 (1999-03-01), Swanfeld, Jr.
patent: 6166352 (2000-12-01), Turton
patent: 6278085 (2001-08-01), Abukasm
patent: 6727471 (2004-04-01), Evans et al.

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