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contre-signature
comp., MS counter-signature (A signature of an existing signature and message or a signature of an existing signature. A countersignature is used to sign the encrypted hash of an existing signature or to time stamp a message); countersignature (A signature of an existing signature and message or a signature of an existing signature. A countersignature is used to sign the encrypted hash of an existing signature or to time stamp a message)
patents. joint signature
contre-signature
: 1 phrase in 1 subject
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