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Seismic energy source
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Patent number 4,867,266
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Issue date Sep 19, 1989
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Philip N. Martin
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G01 - MEASURING TESTING
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3915256
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Patent number 3,915,256
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Issue date Oct 28, 1975
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E21 - EARTH DRILLING MINING
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3914732
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Patent number 3,914,732
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Issue date Oct 21, 1975
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F42 - AMMUNITION BLASTING
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3891963
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Patent number 3,891,963
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Issue date Jun 24, 1975
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G01 - MEASURING TESTING
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3878790
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Patent number 3,878,790
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Issue date Apr 22, 1975
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F42 - AMMUNITION BLASTING
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3802534
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Patent number 3,802,534
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Issue date Apr 9, 1974
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G01 - MEASURING TESTING
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3687229
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Patent number 3,687,229
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Issue date Aug 29, 1972
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G01 - MEASURING TESTING
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3535587
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Patent number 3,535,587
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Issue date Oct 20, 1970
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G01 - MEASURING TESTING
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3524519
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Patent number 3,524,519
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Issue date Aug 18, 1970
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F42 - AMMUNITION BLASTING
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3521725
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Patent number 3,521,725
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Issue date Jul 28, 1970
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3509820
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Patent number 3,509,820
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Issue date May 5, 1970
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F42 - AMMUNITION BLASTING
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3509959
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Patent number 3,509,959
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Issue date May 5, 1970
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F42 - AMMUNITION BLASTING
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3502170
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Patent number 3,502,170
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Issue date Mar 24, 1970
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G01 - MEASURING TESTING
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3430566
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Patent number 3,430,566
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Issue date Mar 4, 1969
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F42 - AMMUNITION BLASTING
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3418636
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Patent number 3,418,636
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Issue date Dec 24, 1968
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G08 - SIGNALLING
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3416631
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Patent number 3,416,631
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Issue date Dec 17, 1968
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G01 - MEASURING TESTING
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3415189
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Patent number 3,415,189
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Issue date Dec 10, 1968
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F42 - AMMUNITION BLASTING