Assignee
KELLER ERNST
15 patents
Top patents by PatentIndex Score
US7059160B2Jun 13, 2006
Rotary locking cylinder for a safety lock
KELLER ERNST24 citations93
US4325241AApr 20, 1982
System for the increase of the number of differing locking possibilities in rotary cylinder locks
KELLER ERNST35 citations93
US4252490AFeb 24, 1981
Ball retrieving and storage device
KELLER ERNST30 citations93
US8075690B2Dec 13, 2011
Diffuser gravity support
KELLER ERNST24 citations91
US4553452ANov 19, 1985
Method for producing security keys having closure possibilities differing from one another
KELLER ERNST22 citations82
US4292824AOct 6, 1981
Double sided tumbler cylinder for a security lock
KELLER ERNST19 citations82
US4137739AFeb 6, 1979
Lock cylinder for a safety lock
KELLER ERNST21 citations82
US6973814B2Dec 13, 2005
Safety key and locking cylinder, and locking system with such safety keys and locking cylinders
KELLER ERNST11 citations74
US5349830ASep 27, 1994
Lock system
KELLER ERNST15 citations74
US4905489AMar 6, 1990
Tumbler in a cylinder lock
KELLER ERNST16 citations74
US4630513ADec 23, 1986
Automatic dip trimmer apparatus
KELLER ERNST15 citations74
US3930390AJan 6, 1976
Espagnolette lock
KELLER ERNST9 citations74
US8899082B2Dec 2, 2014
Closing device
KELLER ERNST4 citations73
US4686816AAug 18, 1987
Dip tube loader and handler apparatus
KELLER ERNST3 citations63
US8695387B2Apr 15, 2014
Closing device
KELLER ERNST0 citations52