Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Robert; Henri F. A.
Address:
Herblay, FR
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4860837 Rotary and reciprocating drilling machine August 29, 1989
The invention relates to a drilling machine comprising a kelly (5) suspended from a boom (3) mounted for pivoting on a chassis (1), a rotary table (7) through which the kelly is movable axially, drive members provided in the rotary table for rotating the kelly and a rotary drilling t










 
 
  Recently Added Patents
Method and system for parallelizing data copy in a distributed file system
Method for producing cathode active material for a lithium secondary battery
Expressive grouping for language integrated queries
Home appreciation participation notes
Brushless electric motor or generator in shell construction
Release layer
Image forming apparatus
  Randomly Featured Patents
System and method for using timestamps to detect attacks
Optical transformation device
Folding and packaging machine
Wiring harness plug, especially as planar two-cell limiting current probe having an injection-molded cover element
Toothbrush having needle-shaped bristle tapered at one end and manufacturing method thereof
Interactive text message advertisements
Outflow distributor for espresso coffee maker
Submarine branching unit having asymmetrical architecture
Tricyclic derivatives, compositions and methods of use
Track skipper for video disc player