Inventor
DUWEL EDWARD C
US20 patents
Patents
20 patentsUS4447890AMay 8, 1984
Remote postage meter systems having variable user authorization code
PITNEY BOWES INC189 citations97
US4535421AAug 13, 1985
Universal real time transparent asynchronous serial/echoplex converter
PITNEY BOWES INC27 citations92
US4528644AJul 9, 1985
Customizing the firmware after assembly of an electronic postage meter
PITNEY BOWES INC31 citations92
US4442501AApr 10, 1984
Electronic postage meter with weak memory indication
PITNEY BOWES INC28 citations92
US4424573AJan 3, 1984
System for entering a postage meter serial number into a nonvolatile memory from an external channel after assembly of the meter
PITNEY BOWES INC29 citations92
US4347506AAug 31, 1982
Electronic postage meter having check date warning with control for overriding the check date warning
PITNEY BOWES INC32 citations92
US4280180AJul 21, 1981
Electronic postage meter having field resettable control values
PITNEY BOWES INC40 citations92
US4549281AOct 22, 1985
Electronic postage meter having keyboard entered combination for recharging
PITNEY BOWES INC22 citations82
US4283721AAug 11, 1981
Electronic postage meter having check date warning
PITNEY BOWES INC17 citations74
US4739486AApr 19, 1988
Modifying a firmware variable in an electronic postage meter
PITNEY BOWES INC13 citations73
US4636975AJan 13, 1987
Controlling firmware branch points in an electronic postage meter
PITNEY BOWES INC10 citations73
US4509141AApr 2, 1985
Postage meter with keyboard keys used for changing operating constants
PITNEY BOWES INC9 citations73
US4506329AMar 19, 1985
Non-volatile memory serial number lock for electronic postage meter
PITNEY BOWES INC19 citations73
US4519048AMay 21, 1985
Postage meter system for communicating platen movement to a microprocessor to signal completion of printing
PITNEY BOWES INC18 citations72
US4535407AAug 13, 1985
Postage meter with keyboard keys for changing postage unused amount
PITNEY BOWES INC6 citations63
US4266222AMay 5, 1981
Electronic postage meter having reset base warning
PITNEY BOWES INC6 citations63
US4628476ADec 9, 1986
Completing an incomplete trip in an electronic postage meter
PITNEY BOWES INC4 citations62
US4623987ANov 18, 1986
Postage meter with keyboard keys for commanding and requesting performance of meter operations
PITNEY BOWES INC5 citations62
US4536850AAug 20, 1985
Monitoring the status of the trip cycle in an electronic postage meter
PITNEY BOWES INC3 citations62
US4625282ANov 25, 1986
Postage meter with keyboard keys for causing display of data pertaining to meter operation
PITNEY BOWES INC0 citations41