Douglas G. Lennartson

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Coon Rapids, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Can dispensing unit for spiral vendor
- Patent number 4,368,829
- Issue date Jan 18, 1983
- Gross-Given Manufacturing Company
- Joseph A. Lotspeich
- G07 - CHECKING-DEVICES
Information Patent Grant
Auxiliary dispensing unit for spiral vendor
- Patent number 4,240,563
- Issue date Dec 23, 1980
- Gross-Given Manufacturing Company
- Douglas G. Lennartson
- G07 - CHECKING-DEVICES
Information Patent Grant
Insert member for a helical dispensing coil
- Patent number 4,149,653
- Issue date Apr 17, 1979
- Gross-Given Manufacturing Company
- Douglas G. Lennartson
- G07 - CHECKING-DEVICES