IP Library › Granted Patent US 4,942,921
Granted Patent Utility
US 4,942,921 · App. 07/150,247

Forced air ventilation system

Inventors: David Lee Haessig, Jamshid Jay Hamidi, Roger Hort
Patented Case View Patent ↗
Granted: Jul 24, 1990 Filed: Jan 29, 1988
Inventors
David Lee Haessig
Jamshid Jay Hamidi
Roger Hort
Assignee (at issue)
Staefa Control System AG

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Quick Facts
Patent No.
US 4,942,921
App. No.
07/150,247
Filed
1988-01-29
Granted
1990-07-24
Kind
A