Assignee
SYSTEM DEV CORP
US21 patents
Top patents by PatentIndex Score
US4422158ADec 20, 1983
Method and means for interrogating a layered data base
SYSTEM DEV CORP61 citations96
US4471459ASep 11, 1984
Digital data processing method and means for word classification by pattern analysis
SYSTEM DEV CORP60 citations94
US4267568AMay 12, 1981
Information storage and retrieval system
SYSTEM DEV CORP553 citations94
US4060212ANov 29, 1977
Deicing apparatus and method
SYSTEM DEV CORP64 citations93
US4054255AOct 18, 1977
Microwave ice detector
SYSTEM DEV CORP79 citations93
US4045814AAug 30, 1977
Method and apparatus for scrambling and unscrambling communication signals
SYSTEM DEV CORP122 citations92
US4019201AApr 19, 1977
Method and apparatus for scrambling and unscrambling communication signals
SYSTEM DEV CORP117 citations92
US4597057AJun 24, 1986
System for compressed storage of 8-bit ASCII bytes using coded strings of 4 bit nibbles
SYSTEM DEV CORP77 citations91
US4495566AJan 22, 1985
Method and means using digital data processing means for locating representations in a stored textual data base
SYSTEM DEV CORP41 citations91
US4290115ASep 15, 1981
Data processing method and means for determining degree of match between two data arrays
SYSTEM DEV CORP37 citations90
US4606660AAug 19, 1986
Printer kit for letter sorting machines
SYSTEM DEV CORP37 citations88
US4614528ASep 30, 1986
Dry air breather assembly
SYSTEM DEV CORP45 citations81
US4382277AMay 3, 1983
Method and means utilizing multiple processing means for determining degree of match between two data arrays
SYSTEM DEV CORP26 citations81
US4462081AJul 24, 1984
Signal processing system
SYSTEM DEV CORP22 citations79
US4593290AJun 3, 1986
Collapsible antenna assembly
SYSTEM DEV CORP10 citations71
US4024576AMay 17, 1977
Method and apparatus for scrambling and unscrambling communication signals
SYSTEM DEV CORP8 citations70
US4584719AApr 22, 1986
Fiber optic workstation datalink interface
SYSTEM DEV CORP20 citations66
US4580858AApr 8, 1986
Alignment fixture assembly for surface-mount connectors
SYSTEM DEV CORP9 citations66
US4628303ADec 9, 1986
Visual monitor for electrical signals
SYSTEM DEV CORP18 citations60
US4249033AFeb 3, 1981
Vented radio frequency shielded enclosure
SYSTEM DEV CORP19 citations60
US4134077AJan 9, 1979
Amplifier circuit operable over a wide temperature range
SYSTEM DEV CORP6 citations46