David C. Janssen

Person

Shorewood, WI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Self-compensating motion detector
- Patent number 7,501,595
- Issue date Mar 10, 2009
- Strattec Security Corporation
- Steven J. Dimig
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Steering column lock apparatus and method
- Patent number 7,140,213
- Issue date Nov 28, 2006
- Strattec Security Corporation
- Michael G. Feucht
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Vehicle coded ignition lock using a magnetic sensor
- Patent number 6,958,551
- Issue date Oct 25, 2005
- Strattec Security Corporation
- David C. Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Key assembly for vehicle ignition locks
- Patent number 6,948,344
- Issue date Sep 27, 2005
- Strattec Security Corporation
- David C Janssen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Security system for a vehicle and method of operating same
- Patent number 6,617,961
- Issue date Sep 9, 2003
- Strattec Security Corporation
- David C. Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Key assembly for vehicle ignition locks
- Patent number 6,427,504
- Issue date Aug 6, 2002
- Strattec Security Corporation
- David C. Janssen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Key assembly for vehicle ignition locks
- Patent number 6,367,298
- Issue date Apr 9, 2002
- Strattec Security Corporation
- David C. Janssen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Key assembly for vehicle ignition locks
- Patent number 6,367,299
- Issue date Apr 9, 2002
- Strattec Security Corporation
- David C. Janssen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Key assembly for vehicle ignition locks
- Patent number 6,276,179
- Issue date Aug 21, 2001
- Strattec Security Corporation
- David C. Janssen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Key assembly for vehicle ignition locks
- Patent number 6,035,677
- Issue date Mar 14, 2000
- Strattec Security Corporation
- David C. Janssen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Tumberless automobile ignition lock
- Patent number 5,836,187
- Issue date Nov 17, 1998
- Strattec Security Corporation
- David C. Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Magnetizer holding fixture
- Patent number 5,659,279
- Issue date Aug 19, 1997
- Strattec Security Corp.
- David C. Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Breakaway cylinder head
- Patent number 5,611,225
- Issue date Mar 18, 1997
- Strattec Security Corporation
- Dennis E. Resch
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Anti-magnetic tampering system for automobile ignition lock
- Patent number 5,551,267
- Issue date Sep 3, 1996
- Briggs & Stratton Corporation
- David C. Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Fail safe system for a mechanical lock key set with electronic inte...
- Patent number 5,455,571
- Issue date Oct 3, 1995
- Strattec Security Corporation
- David C. Janssen
- G07 - CHECKING-DEVICES
Information Patent Grant
Key assembly for vehicle ignition locks
- Patent number 5,433,096
- Issue date Jul 18, 1995
- Strattec Security Corporation
- David C. Janssen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Modular wiring harness for electronic vehicle ignition lock
- Patent number 5,398,532
- Issue date Mar 21, 1995
- Briggs & Stratton Corporation
- David C. Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Fail safe system for a mechanical lock and key set with electrical...
- Patent number 5,287,098
- Issue date Feb 15, 1994
- Briggs & Stratton Corp.
- David C. Janssen
- G07 - CHECKING-DEVICES
Information Patent Grant
Anti-tampering magnet for automobile ignition lock
- Patent number 5,202,580
- Issue date Apr 13, 1993
- Briggs & Stratton
- David Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Self-destruct electrical interlock for cylinder lock and key set
- Patent number 5,186,031
- Issue date Feb 16, 1993
- Briggs & Stratton Corporation
- David C. Janssen
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Self-compensating motion detector
- Publication number 20070080049
- Publication date Apr 12, 2007
- Steven J. Dimig
- B60 - VEHICLES IN GENERAL
Information Patent Application
Steering column lock apparatus and method
- Publication number 20050183476
- Publication date Aug 25, 2005
- Michael G. Feucht
- B60 - VEHICLES IN GENERAL
Information Patent Application
Vehicle coded ignition lock using a mabnetic sensor
- Publication number 20030234579
- Publication date Dec 25, 2003
- David C. Janssen
- B60 - VEHICLES IN GENERAL
Information Patent Application
Key assembly for vehicle ignition locks
- Publication number 20030051520
- Publication date Mar 20, 2003
- STRATTEC SECURITY CORPORATION
- David C. Janssen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

David C. Janssen

Person

Patents Grantslast 30 patents

Self-compensating motion detector

Steering column lock apparatus and method

Vehicle coded ignition lock using a magnetic sensor

Key assembly for vehicle ignition locks

Security system for a vehicle and method of operating same

Key assembly for vehicle ignition locks

Key assembly for vehicle ignition locks

Key assembly for vehicle ignition locks

Key assembly for vehicle ignition locks

Key assembly for vehicle ignition locks

Tumberless automobile ignition lock

Magnetizer holding fixture

Breakaway cylinder head

Anti-magnetic tampering system for automobile ignition lock

Fail safe system for a mechanical lock key set with electronic inte...

Key assembly for vehicle ignition locks

Modular wiring harness for electronic vehicle ignition lock

Fail safe system for a mechanical lock and key set with electrical...

Anti-tampering magnet for automobile ignition lock

Self-destruct electrical interlock for cylinder lock and key set

Patents Applicationslast 30 patents

Self-compensating motion detector

Steering column lock apparatus and method

Vehicle coded ignition lock using a mabnetic sensor

Key assembly for vehicle ignition locks