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Publication numberUSD298473 S
Publication typeGrant
Application numberUS 06/899,052
Publication dateNov 8, 1988
Filing dateAug 22, 1986
Publication number06899052, 899052, US D298473 S, US D298473S, US-S-D298473, USD298473 S, USD298473S
InventorsWyman H. Stackhouse, Ian M. Williamson
Original AssigneeW. Stockhouse Associates Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Filtration unit for exhaust air from a clean room helmet worn for a sterile environment or the like
US D298473 S
Images(1)
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Claims(1)
  1. The ornamental design for a filtration unit for exhaust air from a clean room helmet worn in a sterile environment or the like, as shown and described.
Description

FIG. 1 is a top plan view of a filtration unit for exhaust air from a clean room helmet worn in a sterile environment or the like showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side being substantially similar in appearance;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a perspective view thereof.

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. ClassificationD24/110, D23/365