Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › System for securing postage printing transactions

System for securing postage printing transactions

US Patent 4253158 · Granted Feb 24, 1981

Estimated economic value: $417,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Metering incoming mail to detect fraudulent indicia2000
Metering incoming deliverable mail2000
Metering incoming deliverable mail to identify delivery delays1999
Metering incoming deliverable mail to automatically enable address correction1999
Postage meter using a flag to indicate interuption of accounting register updati1986
Electronic postage meter having plural computing system1985
Electronic postage meter controllable by mailing machine1985
Computer responsive postage meter1985
Accessible housing for electronic system1985
Electronic postage meter having plural computing systems1985
Electronic postage meter having plural computing systems1983
Post office box monitoring system1982