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Stray voltage reduction apparatus
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Patent number 4,816,956
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Issue date Mar 28, 1989
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Ronk Electrical Industries, Inc.
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Claude M. Hertz
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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-
-
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Electrical transfer switch
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Patent number 4,297,551
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Issue date Oct 27, 1981
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Ronk Electrical Industries, Inc.
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Leroy B. Ronk
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H01 - BASIC ELECTRIC ELEMENTS
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Rotary phase converter
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Patent number 4,249,237
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Issue date Feb 3, 1981
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Ronk Electrical Industries, Inc.
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Leroy B. Ronk
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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-
Rotary phase converter
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Patent number 4,079,446
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Issue date Mar 14, 1978
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Ronk Electrical Industries, Inc.
-
Claude M. Hertz
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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78555757 - POWRSOFT
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Serial number 78555757
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Registration number 3054505
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Filing date Jan 28, 2005
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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75320866 - SOFTPOWR
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Serial number 75320866
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Filing date Jul 8, 1997
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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75297509 - POWRSOFT
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Serial number 75297509
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Registration number 2296506
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Filing date May 23, 1997
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74282488 - ROTO-LOAD CENTER
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Serial number 74282488
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Registration number 1753729
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Filing date Jun 8, 1992
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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73600705 - KURRENT-KUTTER
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Serial number 73600705
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Registration number 1442852
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Filing date May 27, 1986
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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73510083 - BLOCKER
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Serial number 73510083
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Registration number 1339065
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Filing date Nov 23, 1984
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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73459316 - BLOCKER
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Serial number 73459316
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Filing date Jan 3, 1984
-
Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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73413719 - KURRENT-KUTTER
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Serial number 73413719
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Registration number 1289507
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Filing date Feb 16, 1983
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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73410480 - ECONO-PHASE
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Serial number 73410480
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Registration number 1298485
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Filing date Jan 24, 1983
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Ronk Electrical Industries, Inc.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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73288652 - FARMPOWR
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Serial number 73288652
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Registration number 1205148
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Filing date Dec 5, 1980
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Ronk Electrical Industries, Inc.
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7 - Machines and machine tools
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73006048 - ROTO-CON
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Serial number 73006048
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Registration number 1016735
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Filing date Nov 12, 1973
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RONK ELECTRICAL INDUSTRIES, INC.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
72356224 - ROTO-LOAD-CENTER
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Serial number 72356224
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Registration number 903781
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Filing date Apr 7, 1970
-
RONK ELECTRICAL INDUSTRIES, INC.
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments