Protective respiratory helmet with rear recess design
Granted 21 Mar 2000 · no office action yet
Current assignee: 3M Innovative Properties Company · originally 3M Company
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Inventors: Brett R. Johnson · Examiner: Ruth McInroy · AU 294 · TC 2900
Life of the patent
5 dated eventsDescription
1 parts›FIG. 1 is a perspective view of a…
FIG. 1 is a perspective view of a protective respiratory helmet with rear recess design showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is bottom plan view thereof;
FIG. 4 is a front elevational view thereof; and,
FIG. 5 is a left side elevational view thereof, the right side view being the mirror image.
The portion of the drawings shown in phantom is for illustrative purposes only and is not intended to form part of the claimed design.
A rear view has been excluded because it would not be illustrative of the claimed ornamental design.
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