Patent
   D881728
Priority
Jul 27 2018
Filed
Oct 26 2018
Issued
Apr 21 2020
Expiry
Apr 21 2035
Assg.orig
Entity
unknown
0
9
n/a
The ornamental design for a calibration block, as shown and described.

FIG. 1 is a left side elevation view of the calibration block;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front perspective view thereof; and,

FIG. 8 is a side perspective view thereof.

Holloway, Paul

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D692785, Jul 23 2012 Hewlett-Packard Development Company, L.P. Right angle ruler
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Oct 26 2018HOLLOWAY NDT & ENGINEERING INC.(assignment on the face of the patent)
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