Growing community of inventors

Coon Rapids, MN, United States of America

Douglas G Lennartson

Average Co-Inventor Count = 1.20

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 56

Douglas G LennartsonJoseph A Lotspeich (1 patent)Douglas G LennartsonDouglas G Lennartson (3 patents)Joseph A LotspeichJoseph A Lotspeich (13 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Gross-given Manufacturing Company (3 from 28 patents)


3 patents:

1. 4368829 - Can dispensing unit for spiral vendor

2. 4240563 - Auxiliary dispensing unit for spiral vendor

3. 4149653 - Insert member for a helical dispensing coil

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as of
12/5/2025
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