DIFF Main Group
E21D 19/00 Provisional protective covers for working space (E21D9/06, E21D23/00 take precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Provisional protective covers for working space
CPC: Provisional protective covers for working space (E21D9/06, E21D23/00 take precedence)
Full Title
Full titles differ between systems:
IPC:
Provisional protective covers for working space
CPC:
Provisional protective covers for working space (E21D9/06, E21D23/00 take precedence)
Of 3 combined children, 2 exist in both systems.
1 codes exist only in IPC.
Child Classifications
Navigate with arrow keys, Enter to open