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Patent
   D640290
Priority
Oct 11 2010
Filed
Oct 11 2010
Issued
Jun 21 2011
Expiry
Jun 21 2025
Inventors
Ingram, L.…
Assg.orig
THE CHARLE…
Assg.curr
The Charle…
Entity
unknown
Referenced by
35
References
40
Maint.:
n/a
The ornamental design for a micro-trenching blade, as shown and described.

FIG. 1 is a perspective view of a micro-trenching blade showing our new design;

FIG. 2 is an enlarged top plan view thereof showing the position of a group of three cutting elements, the wavy broken lines shown representing the cutaway edges of the enlarged section forming no part of the claimed design; and,

FIG. 3 is an enlarged side view thereof showing the position of a group of five cutting elements.

The broken line showing of multiple circular elements and the eight areas around the perimeter of the claim is included for the purpose of illustrating portions of the micro-trenching blade and forms no part of the claimed design.
INVENTORS:

Ingram, L. Shane, Stellman, Vernon T., Walgren, Michael C.

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ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 01 2010WALGREN, MICHAEL C THE CHARLES MACHINE WORKS, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0251210788 pdf
Oct 05 2010STELLMAN, VERNON T THE CHARLES MACHINE WORKS, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0251210788 pdf
Oct 06 2010INGRAM, L SHANETHE CHARLES MACHINE WORKS, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0251210788 pdf
Oct 11 2010The Charles Machine Works, Inc.(assignment on the face of the patent)
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