Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Reexamination Certificate
2008-05-27
2008-05-27
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
C356S035500
Reexamination Certificate
active
07377181
ABSTRACT:
A method of measuring strain in a test specimen comprises the steps of placing a pattern of marks on a surface of the test specimen, wherein the pattern of marks includes a plurality of target marks and a plurality of sets of coded marks, using the sets of coded marks to identify locations of at least two of the target marks, and using a change in distance between at least two of the marks to determine strain in the test specimen. An apparatus that performs the method is also provided.
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Christ, Jr. Robert J.
Madsen John Steven
Nardiello Jerrell Anthony
Papazian John M.
Kirkland, III Freddie
Lefkowitz Edward
Lenart, Esq. Robert P.
Northrop Grumman Corporation
Pietragallo Gordon Alfano Bosick & Raspanti, LLP
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