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3196201
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Patent number 3,196,201
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Issue date Jul 20, 1965
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3190951
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Patent number 3,190,951
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Issue date Jun 22, 1965
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3139475
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Patent number 3,139,475
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2973484
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Patent number 2,973,484
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Issue date Feb 28, 1961
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2963659
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Patent number 2,963,659
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Issue date Dec 6, 1960
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2947913
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Patent number 2,947,913
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Issue date Aug 2, 1960
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H01 - BASIC ELECTRIC ELEMENTS
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2861187
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Patent number 2,861,187
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H03 - BASIC ELECTRONIC CIRCUITRY
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2840706
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Patent number 2,840,706
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Issue date Jun 24, 1958
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H03 - BASIC ELECTRONIC CIRCUITRY
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2828447
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Patent number 2,828,447
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Issue date Mar 25, 1958
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G11 - INFORMATION STORAGE
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2822471
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Patent number 2,822,471
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Issue date Feb 4, 1958
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H03 - BASIC ELECTRONIC CIRCUITRY
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2811887
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Patent number 2,811,887
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Issue date Nov 5, 1957
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2811069
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Patent number 2,811,069
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Issue date Oct 29, 1957
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2798983
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Patent number 2,798,983
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Issue date Jul 9, 1957
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G11 - INFORMATION STORAGE
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2783381
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Patent number 2,783,381
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Issue date Feb 26, 1957
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2782307
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Patent number 2,782,307
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Issue date Feb 19, 1957
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2740892
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Patent number 2,740,892
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Issue date Apr 3, 1956
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2691745
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Patent number 2,691,745
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Issue date Oct 12, 1954
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H03 - BASIC ELECTRONIC CIRCUITRY
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2680198
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Patent number 2,680,198
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2659815
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Patent number 2,659,815
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Issue date Nov 17, 1953
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H03 - BASIC ELECTRONIC CIRCUITRY
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2622193
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Patent number 2,622,193
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2535303
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Patent number 2,535,303
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Issue date Dec 26, 1950
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2506723
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Patent number 2,506,723
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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2502687
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2140840
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Patent number 2,140,840
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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2048610
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Patent number 2,048,610
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1993890
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Patent number 1,993,890
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1832402
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Patent number 1,832,402
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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1321432
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H01 - BASIC ELECTRIC ELEMENTS