Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 175/4.59
Name: Boring or penetrating the earth > Boring with explosion in inaccessible hole > Projectile forms bore > With means to prevent preliminary bore fluid contact
Description: Subject matter directed to means which are provided to prevent ambient fluid in the hole from coming in contact with the missile until propulsion of the missile commences.

Patents under this class:

Patent Number Title Of Patent Date Issued
6557650 Method and apparatus for protecting explosives May. 6, 2003
6386296 Method and apparatus of protecting explosives May. 14, 2002
4467878 Shaped charge and carrier assembly therefor Aug. 28, 1984
4063509 Device for stimulation of geothermal wells Dec. 20, 1977
3939927 Combined gravel packing and perforating method and apparatus for use in well bores Feb. 24, 1976

  Recently Added Patents
Systems and methods for building axes, co-axes and paleo-geographic coordinates related to a stratified geological volume
Antenna for an automobile
Switched capacitor amplifier
Process for the production of alcohol
Methods for forming patterned structures
Signal processing device and method for providing oscillating signal in the signal processing device
Process for preparing substituted aromatic carboxylic acids
  Randomly Featured Patents
4-substituted piperidines
Degradation of nitrocellulose by combined cultures of Sclerotium rolfsii ATCC 24459 and fusarium solani IFO 31093
Pulse repetition modulator apparatus
Tilting independent suspension system for motorcycle trike
Automated route plan generation
Quasi-infinite heat source/sink
Signal transmitting device suited to fast signal transmission
Natural cheese of intensified flavor
Video banking booth
Temperature compensator for gas flow meter