Patent classifications
E
FIXED CONSTRUCTIONS
Load children
E04
BUILDING
Load children
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Load children
2201/00
Joining sheets or plates or panels
Load children Filter patents View analytics View as hierarchy
E04F2201/02
Non-undercut connections, e.g. tongue and groove connections
Load children Filter patents View analytics View as hierarchy
E04F2201/025
with tongue and grooves alternating transversally in the direction of the thickness of the panel, e.g. multiple tongue and grooves oriented parallel to each other
Filter patents View analytics View as hierarchy