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CA

Dale A Van Spengen

Average Co-Inventor Count = 1.50

ph-index = 1

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 = 16

Dale A Van SpengenDonald E Morgan (1 patent)Dale A Van SpengenLee Lina Ourn (1 patent)Dale A Van SpengenWilliam Harry Kemp (1 patent)Dale A Van SpengenDiego David Perez (1 patent)Dale A Van SpengenDale A Van Spengen (4 patents)Donald E MorganDonald E Morgan (15 patents)Lee Lina OurnLee Lina Ourn (6 patents)William Harry KempWilliam Harry Kemp (3 patents)Diego David PerezDiego David Perez (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nuwhirl Systems Corporation (3 from 6 patents)

2. Other (1 from 832,812 patents)


4 patents:

1. 11213172 - Drain fixture

2. 11198993 - Drain fitting device

3. 10542846 - Flow drain for bathing apparatus

4. 6346790 - Induction motor system with an induction motor and an electrically isolated voltage modulation motor controller

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as of
12/18/2025
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