G01C 17/28 Electromagnetic compasses (with north seeking magnetic elements and having electric pick-offs G01C17/26)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Electromagnetic compasses
CPC: Electromagnetic compasses (with north seeking magnetic elements and having electric pick-offs G01C17/26)
Full Title
Full titles differ between systems:
Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes > Magnetic compasses > Electromagnetic compasses
Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes (using gyroscopic effect G01C19/00) > Magnetic compasses > Electromagnetic compasses (with north seeking magnetic elements and having electric pick-offs G01C17/26)
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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