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3864724
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Patent number 3,864,724
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Issue date Feb 4, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3775636
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Patent number 3,775,636
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Issue date Nov 27, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3701265
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Patent number 3,701,265
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H01 - BASIC ELECTRIC ELEMENTS
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3138201
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Patent number 3,138,201
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Issue date Jun 23, 1964
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F28 - HEAT EXCHANGE IN GENERAL
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3073989
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Patent number 3,073,989
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Issue date Jan 15, 1963
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H01 - BASIC ELECTRIC ELEMENTS
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3048728
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Patent number 3,048,728
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H01 - BASIC ELECTRIC ELEMENTS
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3026416
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Patent number 3,026,416
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2980813
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Patent number 2,980,813
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Issue date Apr 18, 1961
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H01 - BASIC ELECTRIC ELEMENTS
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2963604
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Patent number 2,963,604
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Issue date Dec 6, 1960
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2898489
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Patent number 2,898,489
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Issue date Aug 4, 1959
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2776227
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Patent number 2,776,227
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Issue date Jan 1, 1957
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H01 - BASIC ELECTRIC ELEMENTS
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2761084
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Patent number 2,761,084
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Issue date Aug 28, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2745772
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Patent number 2,745,772
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Issue date May 15, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2739084
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Patent number 2,739,084
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Issue date Mar 20, 1956
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2730639
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Patent number 2,730,639
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Issue date Jan 10, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2727170
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Patent number 2,727,170
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H01 - BASIC ELECTRIC ELEMENTS
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2716203
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Patent number 2,716,203
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Issue date Aug 23, 1955
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H01 - BASIC ELECTRIC ELEMENTS
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2712613
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Patent number 2,712,613
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H01 - BASIC ELECTRIC ELEMENTS
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2702274
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Patent number 2,702,274
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Issue date Feb 15, 1955
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H01 - BASIC ELECTRIC ELEMENTS
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2667596
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Patent number 2,667,596
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H01 - BASIC ELECTRIC ELEMENTS
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2661304
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Patent number 2,661,304
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H01 - BASIC ELECTRIC ELEMENTS
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2600121
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Patent number 2,600,121
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H01 - BASIC ELECTRIC ELEMENTS
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2599754
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Patent number 2,599,754
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Issue date Jun 10, 1952
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H01 - BASIC ELECTRIC ELEMENTS
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2598612
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Patent number 2,598,612
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Issue date May 27, 1952
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H01 - BASIC ELECTRIC ELEMENTS
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2598412
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Patent number 2,598,412
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Issue date May 27, 1952
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C03 - GLASS MINERAL OR SLAG WOOL
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2579772
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Patent number 2,579,772
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H01 - BASIC ELECTRIC ELEMENTS
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2558647
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Patent number 2,558,647
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H01 - BASIC ELECTRIC ELEMENTS
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2539410
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Patent number 2,539,410
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H01 - BASIC ELECTRIC ELEMENTS
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2507958
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Patent number 2,507,958
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H01 - BASIC ELECTRIC ELEMENTS