IP Library › Granted Patent US 4,608,963
Granted Patent Utility
US 4,608,963 · App. 06/688,714

Thermally balanced air flow chimney

Inventors: Donald M. Townsend, John R. Jacklich
Patented Case View Patent ↗
Granted: Sep 2, 1986 Filed: Jan 4, 1985
Inventors
Donald M. Townsend
John R. Jacklich
Assignee (at issue)
Simpson Dura-Vent Company, Inc.

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Quick Facts
Patent No.
US 4,608,963
App. No.
06/688,714
Filed
1985-01-04
Granted
1986-09-02
Kind
A