Peter R. Johnson

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Wilsonville, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Timepiece having disks of graduated design density
- Patent number 5,943,300
- Issue date Aug 24, 1999
- Peter R. Johnson
- G04 - HOROLOGY
Information Patent Grant
Timepiece having disks of graduated design density
- Patent number 5,751,663
- Issue date May 12, 1998
- Peter R. Johnson
- G04 - HOROLOGY