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
Liquid crystal display having a voltage stabilization circuit and driving method thereof
Mobile phone
Heat dissipation for electronic modules
Battery pack and method of controlling the same
Surround sound virtualization apparatus and method
Methods and systems for achieving print uniformity using reduced memory or computational requirements
Wall hook
  Randomly Featured Patents
Method and device for the production of a split bearing arrangement
Test device for filter systems, method for testing filter systems, and computer program therefor
High-voltage electric double layer capacitor
Rotation angle positioning device
Mixture of aliphatic C.sub.10 branched olefin epoxides and use thereof in augmenting or enhancing the aroma of perfumes and/or articles
Method of notifying a wireless subscriber as to call payment responsibilities
Spacer layer for electrophoretic display device
Method for optimizing of communication signal
Row redundancy block architecture
Reverse osmosis membrane quenching