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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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Class Information
Number: 102/312
Name: Ammunition and explosives > Blasting > Patterned blasting > Borehole arrangement
Description: Subject matter wherein a blasting charge is in each of several boreholes.


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
4239285 Method of attenuating airblast from detonating explosive in an in situ oil shale retort Dec. 16, 1980
4183584 Dressing a rock face for abandonment Jan. 15, 1980
4175490 Process for producing an underground zone of fragmented and pervious material Nov. 27, 1979
4161142 Blasting booster and methods Jul. 17, 1979
4146429 Dispersement apparatus Mar. 27, 1979
4109575 Blasting method and device Aug. 29, 1978
4069760 Method for driving a shaft with shaped charges Jan. 24, 1978
3987729 Device for firing an electric detonator Oct. 26, 1976
3973497 Directed-thrust blasting process Aug. 10, 1976

1 2 3 4 5


 
 
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