DIFF Main Group
E21B 28/00 Vibration generating arrangements for boreholes or wells, e.g. for stimulating production ( for transmitting measuring-signals E21B47/14; for geophysical measurements G01V1/02)
Introduced: January 1995
Title
Titles differ between systems:
IPC: Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
CPC: Vibration generating arrangements for boreholes or wells, e.g. for stimulating production ( for transmitting measuring-signals E21B47/14; for geophysical measurements G01V1/02)
Full Title
Full titles differ between systems:
IPC:
Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
CPC:
Vibration generating arrangements for boreholes or wells, e.g. for stimulating production ( for transmitting measuring-signals E21B47/14; for geophysical measurements G01V1/02)
No child classifications to compare. This is a leaf node in both IPC and CPC.