Humidifier for use with a portable oxygen unit

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Description

FIG. 1 is a perspective view of the humidifier for use with a portable oxygen unit embodying the design of the present invention;

FIG. 2 is a front end elevational view thereof;

FIG. 3 is a rear end elevational view thereof;

FIG. 4 is a side elevational view thereof, the side opposite being a mirror image of the side shown in FIG. 4; and,

FIG. 5 is a top plan view thereof, the bottom view being a mirror image of the top view shown in FIG. 5.

The broken line showing of environmental structure in FIGS. 1, 4 and 5, is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
2413494 December 1946 Fortney
3096817 July 1963 McKenna
3107669 October 1963 Gross
3730497 May 1973 Schmitt
3979485 September 7, 1976 Hoag
4540529 September 10, 1985 Koszyk
Foreign Patent Documents
135435 1952 AUX
1397664 1973 GBX
Other references
  • Handbook of Pictorial Symbols, .COPYRGT.1976, p. 111, water drop symbol A, lower right side of page.
Patent History
Patent number: D338519
Type: Grant
Filed: Jan 8, 1991
Date of Patent: Aug 17, 1993
Inventor: Terry A. Peterson (Ignacio, CO)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Attorney: Terry M. Gernstein
Application Number: 7/638,663
Classifications
Current U.S. Class: Humidifier (D23/356)