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Publication numberUSD118241 S
Publication typeGrant
Publication dateDec 26, 1939
Filing dateApr 21, 1938
Publication numberUS D118241 S, US D118241S, US-S-D118241, USD118241 S, USD118241S
InventorsWilliam H. Lehmfeerg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Design for a respirator facepiece
US D118241 S
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

w. H 'LEHMBERG D 113,241

RESPIRATOR FACEPIECE Dec. 26, 1939.

Filed April 21, 1938 INVEN TOR Max/0m flzs/ymaaee 98/ :1 ggi omvfi'.

Patented Dec. 26, 1939 De 118,241

UNITED STATES PATENT OFFICE DESIGN FOR A RESPIRATOR FACEPIECE William H. Lehmberg, Still-bridge, Mass., assignor to American Optical Company, Southbridge, Mass., a voluntary association of Massachusetts Application April 21, 1938, Serial No. 76,672

Term of patent 14 years To all whom it may concern: Fig, II is a side view of Fig. I;

Be it known that I, William H. Lehmberg, a Fig, III is a rear view of Fig. I; and citizen of the United States, residing at Stur- Fig. IV is a bottom plan View of Fig. I. bridge, in the county of Worcester and State of The dominant features of my design reside in Massachusetts, have invented a new, original, the portions shown in full lines. and ornamental Design for Respirator Facepiece, I claim: of which the following is a specification, reference The ornamental design for a respirator facebeing made to the accompanying drawing, formpiece, substantially as shown and described. ing a part thereof.

Fig. I is a front view of a respirator facepiece WILLIAM H. LEHMBERG. embodying my design;

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USD740932 *Sep 24, 2013Oct 13, 20153M Innovative Properties CompanyRespirator with raised face seal flexing region
USD776258 *Sep 24, 2013Jan 10, 20173M Innovative Properties CompanyRespirator with face seal multiple flexing region
USD787659 *Sep 24, 2013May 23, 20173M Innovative Properties CompanyRespirator with face seal flexing region
USD787660 *May 22, 2014May 23, 20173M Innovative Properties CompanyRespirator mask having a face seal flexing region