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Theodore J. Szczech
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Lake Elmo, MN, US
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last 30 patents
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Patent Grant
Portable pedal extension, step, footrest, and briefcase for small p...
Patent number
7,049,500
Issue date
May 23, 2006
Theodore Joseph Szczech
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Dual use reflective article
Patent number
6,120,879
Issue date
Sep 19, 2000
3M Innovative Properties Company
Theodore J. Szczech
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Cube corner article with altered inactive areas and method of makin...
Patent number
5,940,212
Issue date
Aug 17, 1999
3M Innovative Properties Company
Norbert L. Johnson
G02 - OPTICS
Information
Patent Grant
Dual orientation retroreflective sheeting
Patent number
5,936,770
Issue date
Aug 10, 1999
3M Innovative Properties Company
Susan K. Nestegard
G02 - OPTICS
Information
Patent Grant
Dual orientation retroreflective sheeting
Patent number
5,706,132
Issue date
Jan 6, 1998
Minnesota Mining and Manufacturing Company
Susan K. Nestegard
G02 - OPTICS
Information
Patent Grant
Retroreflective material with improved angularity
Patent number
5,138,488
Issue date
Aug 11, 1992
Minnesota Mining and Manufacturing Company
Theodore J. Szczech
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL