Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUSD325634 S
Publication typeGrant
Application numberUS 07/501,503
Publication dateApr 21, 1992
Filing dateMar 30, 1990
Publication number07501503, 501503, US D325634 S, US D325634S, US-S-D325634, USD325634 S, USD325634S
InventorsPaul B. Sweeney, Jr.
Original AssigneeWelch Allyn, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Portable spirometer
US D325634 S
Abstract  available in
Previous page
Next page
  1. The ornamental design for a portable spirometer, as shown and described.

FIG. 1 is a perspective view of a portable spirometer, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left end elevational view thereof;

FIG. 5 is a right end elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Non-Patent Citations
1Vitalograph publication, The Compact Spirometer.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
USD744655Nov 24, 2013Dec 1, 2015Benson Medical InstrumentsSpirometer airway
USD778429 *Sep 2, 2015Feb 7, 2017Trudell Medical InternationalRespiratory treatment device
USD780906 *Sep 2, 2015Mar 7, 2017Trudell Medical InternationalRespiratory treatment device
U.S. ClassificationD24/164