Box filter
Latest Porous Media Corporation Patents:
Description
FIG. 1 is a side elevational view of a box filter, showing my new design, the opposite elevational view being a mirror immage thereof; the broken line showing is for illustrative purposes only and forms no part of the claimed design;
FIG. 2 is a right end elevataional view thereof;
FIG. 3 is a left end elevational view thereof; and,
FIG. 4 is a top plan view thereof, the bottom plan view being identical thereto.
Referenced Cited
U.S. Patent Documents
D234721 | April 1975 | Rosenberg |
D235035 | April 1975 | Rosenberg |
D238456 | January 1976 | Mouwen |
D247252 | February 14, 1978 | Rosenberg |
D260175 | August 11, 1981 | Hein et al. |
D267117 | November 30, 1982 | Rosenberg |
D357737 | April 25, 1995 | Spearman |
3765536 | October 1973 | Rosenberg |
3815754 | June 1974 | Rosenberg |
4014797 | March 29, 1977 | Raines et al. |
4187182 | February 5, 1980 | Rosenberg |
5195527 | March 23, 1993 | Hicks |
5376270 | December 27, 1994 | Spearman |
Patent History
Patent number: D373637
Type: Grant
Filed: May 8, 1995
Date of Patent: Sep 10, 1996
Assignee: Porous Media Corporation (St. Paul, MN)
Inventor: Michael R. Spearman (St. Paul, MN)
Primary Examiner: Stella Reid
Law Firm: Marshall & Melhorn
Application Number: 0/38,534
Type: Grant
Filed: May 8, 1995
Date of Patent: Sep 10, 1996
Assignee: Porous Media Corporation (St. Paul, MN)
Inventor: Michael R. Spearman (St. Paul, MN)
Primary Examiner: Stella Reid
Law Firm: Marshall & Melhorn
Application Number: 0/38,534
Classifications
Current U.S. Class:
Filter (37) (D24/162)