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the interaction circuit being a helix or derived from a helix
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CPC
H01J23/50
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H
ELECTRICITY
H01
Electric elements
H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J23/00
Details of transit-time tubes of the types covered by group H01J25/00
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H01J23/50
the interaction circuit being a helix or derived from a helix
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Patents Grants
last 30 patents
Information
Patent Grant
Traveling wave tube
Patent number
7,898,181
Issue date
Mar 1, 2011
Netcomsec Co., Ltd.
Kazuhito Soga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Travelling wave tube provided with an impervious coupling device be...
Patent number
4,985,659
Issue date
Jan 15, 1991
Thomson-CSF
Jacques Tikes
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Travelling wave tube with coupling device between its delay line an...
Patent number
4,970,432
Issue date
Nov 13, 1990
Thomson-CSF
Jacques Tikes
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Microwave tube with improved output signal extracting structure
Patent number
4,682,076
Issue date
Jul 21, 1987
NEC Corporation
Takao Kageyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Travelling wave or like tubes
Patent number
4,585,973
Issue date
Apr 29, 1986
English Electric Valve Company Limited
Ronald L. Finch
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
High efficiency split flow turbine for compressible fluids
Patent number
4,165,949
Issue date
Aug 28, 1979
Groupe Europeen pour la Technique des Turbines a Vapeur G.E.T.T.
Gilbert Riollet
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Traveling wave tube having a helix delay line
Patent number
4,035,687
Issue date
Jul 12, 1977
Siemens Aktiengesellschaft
Franz Gross
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3735188
Patent number
3,735,188
Issue date
May 22, 1973
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3729644
Patent number
3,729,644
Issue date
Apr 24, 1973
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3707647
Patent number
3,707,647
Issue date
Dec 26, 1972
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3535580
Patent number
3,535,580
Issue date
Oct 20, 1970
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3514725
Patent number
3,514,725
Issue date
May 26, 1970
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3510720
Patent number
3,510,720
Issue date
May 5, 1970
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3421120
Patent number
3,421,120
Issue date
Jan 7, 1969
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3400295
Patent number
3,400,295
Issue date
Sep 3, 1968
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3370197
Patent number
3,370,197
Issue date
Feb 20, 1968
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3317780
Patent number
3,317,780
Issue date
May 2, 1967
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3280362
Patent number
3,280,362
Issue date
Oct 18, 1966
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3263194
Patent number
3,263,194
Issue date
Jul 26, 1966
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3227913
Patent number
3,227,913
Issue date
Jan 4, 1966
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3195006
Patent number
3,195,006
Issue date
Jul 13, 1965
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3181090
Patent number
3,181,090
Issue date
Apr 27, 1965
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3020498
Patent number
3,020,498
Issue date
Feb 6, 1962
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
3007076
Patent number
3,007,076
Issue date
Oct 31, 1961
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
3003078
Patent number
3,003,078
Issue date
Oct 3, 1961
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2987644
Patent number
2,987,644
Issue date
Jun 6, 1961
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
2984762
Patent number
2,984,762
Issue date
May 16, 1961
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2955227
Patent number
2,955,227
Issue date
Oct 4, 1960
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2955224
Patent number
2,955,224
Issue date
Oct 4, 1960
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
2953709
Patent number
2,953,709
Issue date
Sep 20, 1960
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
TRAVELING WAVE TUBE
Publication number
20090009086
Publication date
Jan 8, 2009
NEC Microwave Tube, Ltd.
Kazuhito SOGA
H01 - BASIC ELECTRIC ELEMENTS