Box filter

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Information

Patent Grant
D357737

References
Source

Patent Number
D357,737
Date Filed
Thursday, June 24, 1993
31 years ago
Date Issued
Tuesday, April 25, 1995
29 years ago

Inventors
- Michael R. Spearman
Original Assignees
- Porous Media Corporation
Examiners
- Reid; Stella
Agents
- Marshall & Melhorn

US Classifications
- D24 - Medical and laboratory equipment
- D23 - Environmental heating and cooling
Field of Search
- US
- D24 162
- 210 445
- 210 446
- 210 451
- 210 4933
- 210 769
- 210 770
- D23 209
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a box filter, as shown and described.

US Referenced Citations (14)

Number	Name	Date	Kind
D234721	Rosenberg	Apr 1975
D235035	Rosenberg	Apr 1975
D238456	Mouwen	Jan 1976
D247252	Rosenberg	Feb 1978
D253721	Gibeck	Dec 1979
D260175	Hein et al.	Aug 1981
D267117	Rosenberg	Nov 1982
D333348	Yokomachi	Feb 1993
3765536	Rosenberg	Oct 1973
3765537	Rosenberg	Oct 1973
3815754	Rosenberg	Jun 1974
4014797	Raines et al.	Mar 1977
4187182	Rosenberg	Feb 1980
5133879	Tiittanen	Jul 1992