Ventilator

- Soft Construction AB

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Description

FIG. 1 is a top and right side perspective view of a ventilator, showing my new design;

FIG. 2 is a bottom left side perspective view thereof;

FIG. 3 is an end elevational view thereof; and

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3399 March 1869 Sturtevant
3300122 January 1967 Bowles et al.
4676717 June 30, 1987 Willyard, Jr. et al.
Other references
  • New York Blower Co. Catalog, p. 10, FRP Radial Fume Exhauster, top middle, side of page.
Patent History
Patent number: D315949
Type: Grant
Filed: Nov 14, 1989
Date of Patent: Apr 2, 1991
Assignee: Soft Construction AB (Stockholm)
Inventor: Bengt Sello (Stockholm)
Primary Examiner: James M. Gandy
Assistant Examiner: Lisa Lichtenstein
Law Firm: Kinzer, Plyer, Dorn, McEachran & Jambor
Application Number: 7/436,534
Classifications
Current U.S. Class: Vent, Ductwork, Or Element Thereof (D23/393)