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Publication numberUSD304854 S
Publication typeGrant
Application numberUS 07/187,075
Publication dateNov 28, 1989
Filing dateApr 27, 1988
Publication number07187075, 187075, US D304854 S, US D304854S, US-S-D304854, USD304854 S, USD304854S
InventorsWyman H. Stackhouse, Ian M. Williamson
Original AssigneeStackhouse Associates
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Portable air filter
US D304854 S
Images(3)
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Claims(1)
  1. The ornamental design for a portable air filter, as shown.
Description

FIG. 1 is a perspective view of a portable air filter illustrating our new design;

FIG. 2 is a front elevational view thereof, on a reduced scale;

FIG. 3 is a rear elevational view thereof, on a reduced scale;

FIG. 4 is a top plan view thereof, on a reduced scale;

FIG. 5 is a right side elevational view thereof, on a reduced scale;

FIG. 6 is a left side elevational view thereof, on a reduced scale; and

FIG. 7 is a bottom plan view thereof, on a reduced scale;

Non-Patent Citations
Reference
1Industrial Design, 2/1955, p. 96, Raytheon "Micronaire" Room Air Cleaner.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6370695Jun 29, 2001Apr 16, 2002Depuy Orthopaedics, Inc.Head gear apparatus
US6393617Jan 15, 1999May 28, 2002Depuy Orthopaedics, Inc.Head gear apparatus
US6513168Jun 29, 2001Feb 4, 2003Depuy Orthopaedics, Inc.Head gear apparatus
US6711748Jan 3, 2003Mar 30, 2004Depuy Orthopaedics, Inc.Head gear apparatus having movably mounted fan
US6990691Jul 18, 2003Jan 31, 2006Depuy Products, Inc.Head gear apparatus
US7200873Dec 29, 2005Apr 10, 2007Depuy Products, Inc.Head gear apparatus having improved air flow arrangement
US7937779Feb 20, 2007May 10, 2011Depuy ProductsHead gear apparatus having improved air flow arrangement
Classifications
U.S. ClassificationD23/365