FIG. 1 is a perspective view of a filter showing our new design;

FIG. 2 is a side elevational view thereof, the other sides being the same as the side shown; and

FIG. 3 is an elevational view taken from one end thereof.

Referenced Cited
U.S. Patent Documents
D195296 May 1963 Willinger
2704544 March 1955 Ryan
2879784 March 1959 Cutter
3002870 October 1961 Belgrade et al.
3003500 October 1961 Barton et al.
3772857 November 1973 Jackson et al.
3815744 June 1974 Vanderpoel
4018687 April 19, 1977 Zahour
4062781 December 13, 1977 Strauss et al.
Patent History
Patent number: D248485
Type: Grant
Filed: Apr 18, 1977
Date of Patent: Jul 11, 1978
Assignee: Whatman Reeve Angel Limited (Maidstone)
Inventors: Richard Strauss (Lexington, MA), Philip C. Kimball (Andover, MA)
Primary Examiner: James R. Largen
Attorney: Richard P. Crowley
Application Number: 5/788,352
Current U.S. Class: D23/4
International Classification: D2301;