Devices and methods for billing for an electronic prepayment...

Devices and methods for simplification of ocr-based...

Diagnostic control keyboard for a mailing machine

Digital postage franking with coherent light velocimetry

Digital postage indicia verification for inserting system

Digital postage meter system having a replaceable printing...

Digital printing, metering and recording of other post...

Disabling a mailing machine when a print head in not installed

Disabling a mailing machine when a print head is not installed

Disposable franking apparatus

Disposable postage stamp marker

Drive control system for imprinting apparatus

Drive system in a postage meter

Dual metering method for enhanced mail security

Dual mode electronic toll collection transponder

Dual toll system

Dynamic allocation of postal security devices

Dynamic pricing for toll lanes

Dynamic reassignment of postal metering device licensing...

Electro-mechanical ticket dispenser