IPC Subgroup
G01V 1/26 Reference-signal-transmitting devices, e.g. indicating moment of firing of shot
Introduced: September 1968
Last revised: January 2006
Full Title
Seismology; Seismic or acoustic prospecting or detecting > Recording seismic data > Reference-signal-transmitting devices, e.g. indicating moment of firing of shot
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS