MEMORY PROTECTION <MPDI> SEES BOGEN CLOSING Memory Protection Devices Inc said it expects to close the previously announced acquisition of the assets and liabilities of Bogen, a division of <Lear Siegler Inc>, on April one. Memory Protection Devices said it received a senior loan commitment letter as well as the requisite waiver under the New Jersey Environmental Control Reclamation Act, both of which are necessary to complete the acquisition. It declined to provide further details.