Assignee
EVVA WERKE
25 granted patents·6 pending applications·441 citations·filing 1976–2007
Top patents by PatentIndex Score
31 records- 0188US4612787AArrangement for cylinder locksEVVA WERKE·Filed 1984·Granted Sep 23, 1986·57 cites·10 claims
- 0288US4434636ALock having a cylinder core and a housingEVVA WERKE·Filed 1980·Granted Mar 6, 1984·52 cites·4 claims
- 0387US6758074B1High-security round key and lock thereforEVVA WERKE·Filed 2003·Granted Jul 6, 2004·43 cites·19 claims
- 0486US6427506B1Flat-key lockEVVA WERKE·Filed 2000·Granted Aug 6, 2002·33 cites·13 claims
- 0585US4977767AHigh-security flat key and lock thereforEVVA WERKE·Filed 1989·Granted Dec 18, 1990·48 cites·16 claims
- 0673US4686841ARotatable magnetic tumbler and magnetic lock containing sameEVVA WERKE·Filed 1985·Granted Aug 18, 1987·30 cites·8 claims
- 0762US4397166AMagnetic lock having a bolt and locking piecesEVVA WERKE·Filed 1979·Granted Aug 9, 1983·17 cites·21 claims
- 0861US4516416ALocking device and keyEVVA WERKE·Filed 1984·Granted May 14, 1985·18 cites·19 claims
- 0961US4168617ALock systemEVVA WERKE·Filed 1978·Granted Sep 25, 1979·18 cites·13 claims
- 1058US5797287AFlat keyEVVA WERKE·Filed 1996·Granted Aug 25, 1998·19 cites·3 claims
- 1157US5699686ADevice for electromagnetically securing a lock barrelEVVA WERKE·Filed 1995·Granted Dec 23, 1997·26 cites·8 claims
- 1256US8045920B2Apparatus for access control, and read/write deviceEVVA WERKE·Filed 2007·Granted Oct 25, 2011·2 cites·23 claims
- 1355US4368629ALock systemEVVA WERKE·Filed 1979·Granted Jan 18, 1983·15 cites·15 claims
- 1453US7948097B2Apparatus for actuating a locking element with an electrical generatorEVVA WERKE·Filed 2007·Granted May 24, 2011·1 cites·21 claims
- 1553US4084416AMagnetic-type lockEVVA WERKE·Filed 1976·Granted Apr 18, 1978·11 cites·10 claims
- 1650US4294091AControl device for cylinder locksEVVA WERKE·Filed 1979·Granted Oct 13, 1981·8 cites·5 claims
- 1750US4220021AControl device for use in a lockEVVA WERKE·Filed 1979·Granted Sep 2, 1980·11 cites·12 claims
- 1848US6622538B2Cylinder lock with tumbler platesEVVA WERKE·Filed 2002·Granted Sep 23, 2003·6 cites·12 claims
- 1948US2009295535A1Device for access controlEVVA WERKE·Filed 2007·Application pending·0 cites
- 2042US4250725AControl deviceEVVA WERKE·Filed 1979·Granted Feb 17, 1981·6 cites·10 claims
- 2141US2007295045A1Flat keyEVVA WERKE·Filed 2007·Application pending·0 cites
- 2241US2006236733A1High-security flat key and lock thereforEVVA WERKE·Filed 2006·Application pending·0 cites
- 2340US2010018046A1Method for the production of an identification carrier or electronic key for electronically actuated locksEVVA WERKE·Filed 2007·Application pending·0 cites
- 2434US4665726ALock cylinder with rotatable magnetic tumblersEVVA WERKE·Filed 1985·Granted May 19, 1987·5 cites·7 claims
- 2534US4576026ACylinder lock having coupling meansEVVA WERKE·Filed 1984·Granted Mar 18, 1986·8 cites·4 claims
- 2632US2009001735A1Mechanism for Securing the Handle of a Door or WindowEVVA WERKE·Filed 2007·Application pending·0 cites
- 2729US4669284ALock cylinder with rotatable magnetic tumblersEVVA WERKE·Filed 1985·Granted Jun 2, 1987·2 cites·9 claims
- 2829US4229958AControl device particularly for use in a lockEVVA WERKE·Filed 1979·Granted Oct 28, 1980·3 cites·12 claims
- 2927US2009275229A1Device for electrical connection of electrical or electronic componentsEVVA WERKE·Filed 2007·Application pending·0 cites
- 3022US4238752AMagnetizing deviceEVVA WERKE·Filed 1978·Granted Dec 9, 1980·2 cites·10 claims
- 3118US4310820AMagnetizing deviceEVVA WERKE·Filed 1980·Granted Jan 12, 1982·0 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when EVVA WERKE files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →