Patent
   D261996
Priority
Aug 13 1979
Filed
Aug 13 1979
Issued
Nov 24 1981
Expiry
Nov 24 1995
Assg.orig
Entity
unknown
5
7
n/a
The ornamental design for a levelling device, as shown and described.

FIG. 1 is a perspective view of a levelling device showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

Barton, William F.

Patent Priority Assignee Title
D314522, Apr 21 1988 Level
D315521, Feb 22 1988 Level device
D574273, Jun 12 2006 Lewis, Dolin Bubble level drawer pull
D762499, Jun 08 2015 Masonry level
D811907, Nov 08 2016 Adjustable bubble level
Patent Priority Assignee Title
2584917,
2789362,
3233235,
3584387,
3861052,
4182046, Jun 02 1978 Electronic level and protractor
4253242, Oct 13 1978 Digital angle indicator
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 13 1979Martronics Corp.(assignment on the face of the patent)
Mar 28 1982LECTRA LTD ENERGY SAVERS ASSOCIATES, INC SECURITY INTEREST SEE DOCUMENT FOR DETAILS 0039670674 pdf
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