|Publication number||USD118241 S|
|Publication date||Dec 26, 1939|
|Filing date||Apr 21, 1938|
|Publication number||US D118241 S, US D118241S, US-S-D118241, USD118241 S, USD118241S|
|Inventors||William H. Lehmfeerg|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
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;
|Citing Patent||Filing date||Publication date||Applicant||Title|
|USD740932 *||Sep 24, 2013||Oct 13, 2015||3M Innovative Properties Company||Respirator with raised face seal flexing region|
|USD776258 *||Sep 24, 2013||Jan 10, 2017||3M Innovative Properties Company||Respirator with face seal multiple flexing region|
|USD787659 *||Sep 24, 2013||May 23, 2017||3M Innovative Properties Company||Respirator with face seal flexing region|
|USD787660 *||May 22, 2014||May 23, 2017||3M Innovative Properties Company||Respirator mask having a face seal flexing region|