Growing community of inventors

Missoula, MT, United States of America

Keith Krumbeck

Average Co-Inventor Count = 1.00

ph-index = 5

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 = 72

Keith KrumbeckKeith Krumbeck (6 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,718 patents)

2. Spectrum Products, Inc. (1 from 17 patents)

3. The Cheney Company (1 from 6 patents)

4. Spectrum Distributors, Inc. (1 from 1 patent)

5. Industrial Design & Mfg., Inc. (1 from 1 patent)


6 patents:

1. 6378659 - Swimming pool lift

2. 6170612 - Swimming pool lift

3. 5572921 - Lift for the handicapped

4. 5218727 - Above ground spa lift for the handicapped

5. 4283803 - Process for immersing in a swimming pool disabled persons using a

6. 4141089 - Swimming pool apparatus for the handicapped

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as of
12/11/2025
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