![]() Google Patents System and process for delivery status notificationÄownload PDF Info Publication number US20070106737A1 US20070106737A1 US11/272,513 US27251305A US2007106737A1 US 20070106737 A1 US20070106737 A1 US 20070106737A1 US 27251305 A US27251305 A US 27251305A US 2007106737 A1 US2007106737 A1 US 2007106737A1 Authority US United States Prior art keywords electronic message delivery status data packet machine message Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US20070106737A1 - System and process for delivery status notification ![]() ![]() US20070106737A1 - System and process for delivery status notification
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