Inventor
EHRSAM JEAN
FR3 patents
⚠️ This page may combine multiple inventors who share the name “EHRSAM JEAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALSTOM
2 patentsUS6505406B2Jan 14, 2003
Guide method for guiding a device that is designed to insert elements into the ground in order to make a structure, and a device for inserting at least one element into the ground using such a guide method
ALSTOM16 citations81
US6752322B2Jun 22, 2004
Method of constructing a rail track on a track-receiving concrete slab
ALSTOM12 citations66