Inventor
COVINGTON WAYNE F
US33 patents
Patents
33 patentsUS4012725AMar 15, 1977
Programmable calculator
HEWLETT PACKARD CO35 citations90
US4075679AFeb 21, 1978
Programmable calculator
HEWLETT PACKARD CO43 citations89
US4145742AMar 20, 1979
Programmable calculator including user-definable keys
HEWLETT PACKARD CO24 citations81
US4028538AJun 7, 1977
Programmable calculator employing algebraic language
HEWLETT PACKARD CO23 citations80
US4161031AJul 10, 1979
Programmable calculator including boolean flag variable means
HEWLETT PACKARD CO6 citations73
US4159525AJun 26, 1979
Programmable calculator employing computed memory addresses
HEWLETT PACKARD CO3 citations73
US4158231AJun 12, 1979
Programmable calculator including program listing means
HEWLETT PACKARD CO2 citations73
US4158233AJun 12, 1979
Programmable calculator including means for performing implied multiply operations
HEWLETT PACKARD CO3 citations73
US4156917AMay 29, 1979
Programmable calculator including separate user program and data memory areas
HEWLETT PACKARD CO6 citations73
US4156918AMay 29, 1979
Programmable calculator including means for performing computed jumps during program execution
HEWLETT PACKARD CO5 citations73
US4156282AMay 22, 1979
Programmable calculator including relational operator means
HEWLETT PACKARD CO2 citations73
US4152774AMay 1, 1979
Programmable calculator including keyboard function means for raising the number ten to any designated power
HEWLETT PACKARD CO2 citations73
US4152769AMay 1, 1979
Programmable calculator including means for permitting data entry during program execution
HEWLETT PACKARD CO6 citations73
US4152771AMay 1, 1979
Programmable calculator including display means for signalling the user to indicate the exhaustion of a printer paper supply
HEWLETT PACKARD CO5 citations73
US4152770AMay 1, 1979
Programmable calculator including means for programmably controlling magnetic storage units
HEWLETT PACKARD CO4 citations73
US4178633ADec 11, 1979
Programmable calculator including multifunction keys
HEWLETT PACKARD CO8 citations72
US4156285AMay 22, 1979
Programmable calculator including keyboard functions whose argument may be a numeric constant, a storage register, or an arithmetic expression
HEWLETT PACKARD CO2 citations72
US4366553ADec 28, 1982
Electronic computing apparatus employing basic language
HEWLETT PACKARD CO7 citations71
US4322816AMar 30, 1982
Programmable calculator having structure for controlling an x-y plotter
HEWLETT PACKARD CO9 citations71
US4145752AMar 20, 1979
Programmable calculator including separate line numbering means for user-definable functions
HEWLETT PACKARD CO6 citations71
US4437156AMar 13, 1984
Programmable calculator
HEWLETT PACKARD CO16 citations70
US4281390AJul 28, 1981
Programmable calculator including means for performing computed and uncomputed relative branching during program execution
HEWLETT PACKARD CO4 citations62
US4187547AFeb 5, 1980
Programmable calculator including means for controllably introducing blank lines on a printed record during program execution
HEWLETT PACKARD CO3 citations62
US4181965AJan 1, 1980
Programmable calculator including program trace means
HEWLETT PACKARD CO6 citations62
US4177518ADec 4, 1979
Programmable calculator including scrolling alphanumeric display means
HEWLETT PACKARD CO4 citations62
US4164039AAug 7, 1979
Programmable calculator including a key for performing either a subtraction or a unary minus function
HEWLETT PACKARD CO1 citations62
US4162532AJul 24, 1979
Programmable calculator including data format display control means
HEWLETT PACKARD CO3 citations62
US4615015ASep 30, 1986
Self-contained electronic computer including means for immediately executing or storing alphanumeric statements entered into the computer
HEWLETT PACKARD CO5 citations61
US4456964AJun 26, 1984
Calculator including means for displaying alphanumeric prompting messages to the operator
HEWLETT PACKARD CO6 citations61
US4127897ANov 28, 1978
Programmable calculator having extended input/output capability
HEWLETT PACKARD CO4 citations60
US4164019AAug 7, 1979
Programmable calculator including alphanumeric display means
HEWLETT PACKARD CO0 citations52
US4152773AMay 1, 1979
Programmable calculator including means for establishing a priority for executing algebraic operations
HEWLETT PACKARD CO0 citations52
US4546448AOct 8, 1985
Programmable calculator including program variable initialization means and definition means array
HEWLETT PACKARD CO0 citations49