Room air filter

Description

FIG. 1 is a top, front and side perspective view of a room air filter, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof, the opposite side being a mirror image of that shown; and,

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
3853519 December 1974 York, Jr.
4075106 February 21, 1978 Yamazaki
4178346 December 11, 1979 Allen et al.
4628970 December 16, 1986 Vasella
Foreign Patent Documents
1169363 June 1984 CAX
Patent History
Patent number: D326144
Type: Grant
Filed: Dec 6, 1990
Date of Patent: May 12, 1992
Inventor: George S. Havrilla (Bushkill, PA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Attorney: Richard S. Roberts
Application Number: 7/624,278
Classifications
Current U.S. Class: Filter (D23/365)