John P. Nicholson

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Shoreview, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Outdoor changeable message sign
- Patent number 6,750,829
- Issue date Jun 15, 2004
- ADDCO, Inc.
- Eugene Luoma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Sign system with field changeable screen size and message
- Patent number 6,414,650
- Issue date Jul 2, 2002
- Addco
- Timothy J. Nicholson
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Changeable message sign system with reconfigurable sign screen
- Patent number 6,150,996
- Issue date Nov 21, 2000
- ADDCO, Inc.
- Timothy J. Nicholson
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Method and apparatus for dispensing and retrieving highway warning...
- Patent number 5,213,464
- Issue date May 25, 1993
- ADDCO Manufacturing, Inc.
- John P. Nicholson
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Actuator for remote control
- Patent number 5,187,993
- Issue date Feb 23, 1993
- ADDCO Manufacturing, Inc.
- John P. Nicholson
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Outdoor changeable message sign
- Publication number 20070251132
- Publication date Nov 1, 2007
- Eugene Luoma
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Outdoor changeable message sign
- Publication number 20050162342
- Publication date Jul 28, 2005
- ADDCO, INC.
- Eugene Luoma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Outdoor changeable message sign
- Publication number 20020175881
- Publication date Nov 28, 2002
- Eugene Luoma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Outdoor sign with sealed sign module
- Publication number 20010037591
- Publication date Nov 8, 2001
- Timothy J. Nicholson
- G06 - COMPUTING CALCULATING COUNTING