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Edward C. Kelm
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Pasadena, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Display typewriter
Patent number
4,620,808
Issue date
Nov 4, 1986
Protype Corporation
Stephen Kurtin
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Timed flow control valve assembly
Patent number
4,522,221
Issue date
Jun 11, 1985
Autarkic Flow Controls
Donald R. Chivens
G05 - CONTROLLING REGULATING
Information
Patent Grant
Tone activated hold circuit
Patent number
4,419,543
Issue date
Dec 6, 1983
Edward C. Kelm
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Precision phonocartridge interface
Patent number
4,328,573
Issue date
May 4, 1982
NAD International
Stephen Kurtin
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for data acquisition and transport
Patent number
4,301,521
Issue date
Nov 17, 1981
Geophysical Systems Corp.
Edward C. Kelm
G01 - MEASURING TESTING
Information
Patent Grant
Ambience processor
Patent number
4,275,267
Issue date
Jun 23, 1981
Koss Corporation
Stephen L. Kurtin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Digital delay/ambience processor
Patent number
4,237,343
Issue date
Dec 2, 1980
Stephen L. Kurtin
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Seismic cable for use with array terminal type acquisition systems
Patent number
4,148,006
Issue date
Apr 3, 1979
Geophysical Systems Corp.
Edward C. Kelm
G01 - MEASURING TESTING
Information
Patent Grant
Print element having flexible characters
Patent number
4,105,341
Issue date
Aug 8, 1978
Lexitron Corporation
Donald R. Chivens
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS