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3811304
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Patent number 3,811,304
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Issue date May 21, 1974
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3729148
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Patent number 3,729,148
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Issue date Apr 24, 1973
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G11 - INFORMATION STORAGE
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3588660
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Patent number 3,588,660
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Issue date Jun 28, 1971
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3583186
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Patent number 3,583,186
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Issue date Jun 8, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3506921
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Patent number 3,506,921
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Issue date Apr 14, 1970
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G05 - CONTROLLING REGULATING
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3400895
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Patent number 3,400,895
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Issue date Sep 10, 1968
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G11 - INFORMATION STORAGE
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3377924
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Patent number 3,377,924
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Issue date Apr 16, 1968
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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3344841
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Patent number 3,344,841
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Issue date Oct 3, 1967
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B22 - CASTING POWDER METALLURGY
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3309871
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Patent number 3,309,871
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Issue date Mar 21, 1967
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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3305873
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Patent number 3,305,873
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Issue date Feb 21, 1967
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3273182
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Patent number 3,273,182
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Issue date Sep 20, 1966
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3267235
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Patent number 3,267,235
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Issue date Aug 16, 1966
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER