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Patent
   D253197
Priority
Jul 07 1977
Filed
Dec 29 1977
Issued
Oct 23 1979
Expiry
Oct 23 1993
Inventors
Jarvinen, …
Assg.orig
Kemira Oy.
Assg.curr
Kemira Oy.
Entity
unknown
Referenced by
16
References
3
Maint.:
n/a
The ornamental design for a helmet, as shown.

FIG. 1 is a side elevation of a helmet in accordance with my new design,

FIG. 2 is a front elevation thereof,

FIG. 3 is a rear elevation thereof, and

FIG. 4 is a bottom plan view thereof.
INVENTORS:

Jarvinen, Jyrki

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D283940, Jul 22 1983 Mine Safety Appliances Company Fireman's helmet
D311792, Jan 12 1987 Gallet S.A. Helmet
D397519, May 17 1996 Med-Eng Systems Inc. Protective mine clearance helmet
D439021, Jan 14 1998 MSA Gallet Protective helmet
D475812, Aug 14 2001 VIRTUS GROUP, LP Bomb disposal suit
D495838, Jul 10 2003 Arai Helmet (Europe) B.V. Helmet
D510644, Sep 05 2003 NP Aerospace Limited Protective helmet
D517740, Aug 14 2001 VIRTUS GROUP, LP Helmet
D519683, Sep 27 2004 VIRTUS GROUP, LP Protective helmet
D521688, Sep 27 2004 VIRTUS GROUP, LP Protective helmet
D531762, Mar 01 2004 VIRTUS GROUP, LP Protective helmet
D547007, Feb 28 2005 Schuberth Werk GmbH Commando helmet
D567450, Nov 18 2004 Helmet Integrated Systems Limited Helmet
D705490, Mar 15 2013 Bell Sports, Inc. Protective motorsports helmet
D715999, Mar 15 2013 Bell Sports, Inc. Protective motorsports helmet
D724791, Mar 15 2013 Bell Sports, Inc. Protective motorsports mask
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3239842,
200757,
207900,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 29 1977Kemira Oy.(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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