David Leslie Greenaway

Person

Birchwil, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for validating valuable documents
- Patent number 4,870,260
- Issue date Sep 26, 1989
- LGZ Landis & Gyr Zug AG
- Andrzej Niepolomski
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optically diffracting security element
- Patent number 4,662,653
- Issue date May 5, 1987
- LGZ Landis & Gyr Zug AG
- David L. Greenaway
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Device for the thermal erasure of mechanically readable optical mar...
- Patent number 4,376,887
- Issue date Mar 15, 1983
- LGZ Landis & Gyr Zug AG
- David L. Greenaway
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Projection screen and method for making same
- Patent number 4,297,001
- Issue date Oct 27, 1981
- LGZ Landis & Gyr Zug AG
- Gregor Antes
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoelectric apparatus for detecting altered markings
- Patent number 4,250,393
- Issue date Feb 10, 1981
- LGZ Landis & Gyr Zug AG
- David L. Greenaway
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Documents embossed with machine-readable information by means of an...
- Patent number 4,250,217
- Issue date Feb 10, 1981
- LGZ Landis & Gyr Zug AG
- David L. Greenaway
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for embossing a relief pattern into a thermoplastic informa...
- Patent number 4,223,050
- Issue date Sep 16, 1980
- LGZ Landis & Gyr Zug AG
- Alex Nyfeler
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and device for identifying documents
- Patent number 4,211,918
- Issue date Jul 8, 1980
- LGZ Landis & Gyr Zug AG
- Alex Nyfeler
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Documents embossed with optical markings representing genuineness i...
- Patent number 4,184,700
- Issue date Jan 22, 1980
- LGZ Landis & Gyr Zug AG
- David L. Greenaway
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Optically coded document and method of making same
- Patent number 4,163,570
- Issue date Aug 7, 1979
- LGZ Landis & Gyr Zug AG
- David L. Greenaway
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Apparatus and method for producing an electrical signal responsive...
- Patent number 4,122,435
- Issue date Oct 24, 1978
- LGZ Landis & Gyr Zug AG
- David Leslie Greenaway
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Multilayer identification card
- Patent number 4,119,361
- Issue date Oct 10, 1978
- Landis & Gyr
- David Leslie Greenaway
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER

David Leslie Greenaway

Person

Patents Grantslast 30 patents

Method and apparatus for validating valuable documents

Optically diffracting security element

Device for the thermal erasure of mechanically readable optical mar...

Projection screen and method for making same

Photoelectric apparatus for detecting altered markings

Documents embossed with machine-readable information by means of an...

Process for embossing a relief pattern into a thermoplastic informa...

Method and device for identifying documents

Documents embossed with optical markings representing genuineness i...

Optically coded document and method of making same

Apparatus and method for producing an electrical signal responsive...

Multilayer identification card