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Firearms & Weapons
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:
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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
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